JP4027471B2 - Novel cyclohexylalkanols and perfume compositions containing the same - Google Patents
Novel cyclohexylalkanols and perfume compositions containing the same Download PDFInfo
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- JP4027471B2 JP4027471B2 JP23079297A JP23079297A JP4027471B2 JP 4027471 B2 JP4027471 B2 JP 4027471B2 JP 23079297 A JP23079297 A JP 23079297A JP 23079297 A JP23079297 A JP 23079297A JP 4027471 B2 JP4027471 B2 JP 4027471B2
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- YBIUTEHXBIHTDE-UHFFFAOYSA-N CC(C)(C(CC1)CCC1C(C)(C)O)O Chemical compound CC(C)(C(CC1)CCC1C(C)(C)O)O YBIUTEHXBIHTDE-UHFFFAOYSA-N 0.000 description 1
- LEARFTRDZQQTDN-UHFFFAOYSA-N CC(C)(c1ccc(C(C)(C)O)cc1)O Chemical compound CC(C)(c1ccc(C(C)(C)O)cc1)O LEARFTRDZQQTDN-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Fats And Perfumes (AREA)
Description
【0001】
【発明の属する技術分野】
本発明は残香性に優れたフローラル、ウッディ、ミューゲ香気を有し、トイレタリー用品等への賦香成分として有用な新規シクロヘキシルアルカノール類及びそれを含有する香料組成物に関する。
【0002】
【従来の技術及び発明が解決しようとする課題】
従来、シクロヘキシルアルカノール類には有用な香料化合物が知られている。例えば、特公昭55−23242 号公報には4−イソプロピルシクロヘキシルメタノールが鈴蘭の花を想起させる花様の匂いを有すること、また、特公昭62−7176号公報には4−t−ブチルシクロヘキシルメタノールが白檀様の芳香を有することが記載されている。また、特公昭60−7495号公報には、種々のシクロヘキシルメタノール類が悪臭除去作用を持つことが記載されている。
【0003】
しかしながら、化合物の香気はわずかな構造の違いにより全く異なるのが一般的であり、そのため種々の化合物を合成しその香気を検討することは新しい香料を得るためには極めて重要である。
【0004】
香料の調合素材に関しては低価格であること、化学的に安定であること、新しい香りであること等の種々な要望が存在する。従来、ミューゲ様香気を有する香料素材は数多く知られているが、安定でかつ残香性に優れた素材が求められていた。
従って、本発明の課題は、安定でかつ残香性に優れた香料素材として有用な新規化合物を提供することにある。
【0005】
【課題を解決するための手段】
かかる実情において、本発明者らは上記課題を解決するために様々な4−アルコキシアルキルシクロヘキシルアルカノール類を合成し、その香気及び配合系について鋭意検討した結果、残香性に優れたフローラル、ウッディ、ミューゲ香気を有し、幅広いトイレタリー製品の賦香に有用である新規4−アルコキシアルキルシクロヘキシルアルカノール類を見いだし本発明を完成するに至った。
【0006】
即ち、本発明は、一般式(I)で表される新規シクロヘキシルアルカノール類、及びこの新規シクロヘキシルアルカノール類を含有することを特徴とする香料組成物を提供するものである。
【0007】
【化2】
【0008】
(式中、R1, R2, R3及びR4は同一又は異なって、炭素数1〜3のアルキル基又は水素原子を示す。但し、R1, R2, R3及びR4のすべてが水素原子である場合を除く。R5は炭素数1〜3のアルキル基を示す。)
【0009】
【発明の実施の形態】
以下、本発明の実施の形態を詳細に説明する。
【0010】
本発明の新規シクロヘキシルアルカノール類は前記一般式(I)で表されるが、一般式(I)において、R1, R2, R3, R4及びR5で示される炭素数1〜3のアルキル基としては、メチル基、エチル基、n−プロピル基、イソプロピル基等が挙げられる。
【0011】
一般式(I)において、R1及びR2として好ましいものは、水素原子又はメチル基であり、R3及びR4として好ましいものは、水素原子、メチル基又はエチル基、特に水素原子又はメチル基であり、R5として好ましいものはメチル基又はエチル基、特にメチル基である。
【0012】
本発明の新規シクロヘキシルアルカノール類の製造方法を以下に示す。
一般式(I)においてR3及びR4がともに水素原子である化合物の場合は例えば以下の反応式で示す方法によって製造することができる。
【0013】
【化3】
【0014】
(式中、X はハロゲン原子を示し、R1, R2及びR5は前記と同じ意味を有する。)
すなわち、p−ブロモベンジルアルコール(II)の水酸基を水素化ナトリウム、水酸化ナトリウム、水酸化カリウムなどの適当な塩基によりアルコラートとし、これをアルキル硫酸エステル、ハロゲン化アルキル等のアルキル化剤によりエーテル体(III) とする。ついで金属マグネシウムを用い、アリールマグネシウムブロマイドに変換し、種々のカルボニル化合物 (IV) と反応させてヒドロキシエーテル体(V)を得る。ついで適当な触媒、好ましくはルテニウム含有触媒で水素化して対応するシクロヘキシルアルカノール (VI) を得ることができる。
【0015】
また、一般式(I)において、R3が水素原子でなく、R4が水素原子の場合は例えば以下の反応式で示す方法によって製造することができる。
【0016】
【化4】
【0017】
(式中、R3' は炭素数1〜3のアルキル基を示し、R1, R2, R5及びX は前記と同じ意味を有する。)
すなわち、p−ブロモベンジルアルキルカルビノール(VII) の水酸基を水素化ナトリウム、水酸化ナトリウム、水酸化カリウムなどの適当な塩基によりアルコラートとし、これをアルキル硫酸エステル、ハロゲン化アルキル等のアルキル化剤によりエーテル体(VIII)とする。ついで金属マグネシウムを用い、アリールマグネシウムブロマイドに変換し、種々のカルボニル化合物 (IV) と反応させてヒドロキシエーテル体 (IX) を得る。ついで適当な触媒、好ましくはルテニウム含有触媒で水素化して対応するシクロヘキシルアルカノール(X)を得ることができる。
【0018】
また、一般式(I)において、R3及びR4がともに水素原子でない場合は例えば以下の反応式で示す方法によって製造することができる。
【0019】
【化5】
【0020】
(式中、R4' は炭素数1〜3のアルキル基を示し、R1, R2, R5, R3' 及びX は前記と同じ意味を有する。)
すなわち、p−ブロモベンジルアルキルカルビノール (XI) の水酸基を適当な保護基、例えばジヒドロピラン等で保護して化合物(XII) を得、ついで金属マグネシウムを用い、アリールマグネシウムブロマイドに変換し、種々のカルボニル化合物(XIII)と反応させてヒドロキシエーテル体(XIV) を得る。次に水酸基を水素化ナトリウム、水酸化ナトリウム、水酸化カリウムなどの適当な塩基によりアルコラートとし、これをアルキル硫酸エステル、ハロゲン化アルキル等のアルキル化剤によりエーテル体 (XV) とする。メタノール等の溶媒中、硫酸、リン酸、p−トルエンスルホン酸等の適当な酸触媒存在下にエーテル体 (XV) のテトラヒドロピラニルエーテル基を除去してヒドロキシエーテル体(XVI) を得、ついで適当な触媒、好ましくはルテニウム含有触媒で水素化して対応するシクロヘキシルアルカノール(XVII)を得ることができる。
【0021】
また、一般式(I)において、R1とR3がメチル基で、R2とR4が水素原子のものはより簡便に例えば以下の反応式で示す方法によって製造することができる。
【0022】
【化6】
【0023】
(式中、R5は前記と同じ意味を有する。)
すなわち、1,4 −ジアセトキシベンゼン(XVIII) をルテニウム含有触媒で水素化反応により相当するジオール体(XIX) を得る。このジオール体の水酸基を 0.5当量の塩基、例えば、水素化ナトリウム、水酸化ナトリウム、水酸化カリウム等によりアルコラートとし、これをアルキル硫酸エステル、ハロゲン化アルキル等のアルキル化剤によりエーテル体(XX) とすることにより目的とする1−{4−(1−アルコキシエチル)シクロヘキシル}−1−エタノールを得ることができる。
【0024】
また、一般式(I)において、R1, R2, R3及びR4がすべてメチル基のものはより簡便に例えば以下の方法によって製造することができる。
【0025】
【化7】
【0026】
(式中、R5は前記と同じ意味を有する。)
すなわち、α,α’−ジヒドロキシ−p−ジイソプロピルベンゼン(XXI) をルテニウム含有触媒で水素化反応により相当するジオール体(XXII)を得る。このジオール体の水酸基を 0.5当量の塩基、例えば、水素化ナトリウム、水酸化ナトリウム、水酸化カリウム等によりアルコラートとし、これをアルキル硫酸エステル、ハロゲン化アルキル等のアルキル化剤によりエーテル体(XXIII) とすることにより目的とする2−{4−(2−アルコキシ−2−プロピル)シクロヘキシル}−2−プロパノールを得ることができる。
【0027】
上記のような製造方法で得られる本発明の一般式(I)で表されるシクロヘキシルアルカノール類は花様で木様でミューゲ様の香気を有し、しかもその香気は優れた残香性を有することから、単独で、または他の成分と組み合わせて石鹸、シャンプー、リンス、洗剤、化粧品、スプレー製品、芳香剤等の賦香成分として使用できる。
【0028】
また、本発明の香料組成物は、所望組成の調合香料に、一般式(I)で表されるシクロヘキシルアルカノール類を配合して得られるものである。
本発明の香料組成物中の一般式(I)で表されるシクロヘキシルアルカノール類の配合量は、調合香料の種類、目的とする香気の種類及び香気の強さ等により異なるが、 0.1〜90重量%が好ましく、特に 0.5〜50重量%が好ましい。
【0029】
【実施例】
以下、実施例により本発明を更に詳細に説明するが本発明はこれらの実施例により制限されるものではない。
なお、以下の実施例において、Meはメチル基、Etはエチル基を示す。
【0030】
実施例1
1−(4−メトキシメチルシクロヘキシル)−1−エタノールの合成
【0031】
【化8】
【0032】
ジムロート冷却器、温度計のついた 200mlの4つ口フラスコに、60%水素化ナトリウム 4.9g(0.13モル)とテトラヒドロフラン(THF)60mlを加え、攪拌しながら4−ブロモベンジルアルコール19g(0.11モル)をTHF30mlに溶解し滴下した。滴下後、ヨウ化メチル18g(0.13モル)をゆっくり滴下し一晩室温で攪拌した。反応物を100 ℃に昇温し、THFを留去後室温まで冷却し水を加え、過剰の水素化ナトリウムを分解した。反応物に酢酸エチルを加え、有機層が中性になるまで水洗し溶媒を留去してメチルエーテル体19gを得た(収率92%)。
【0033】
ジムロート冷却器、温度計のついた200ml の4つ口フラスコに、マグネシウム粉末1.43g(5.9 ×10-2モル)と脱水THF20mlを加え、攪拌しながら上記方法で合成したメチルエーテル体10g(5.0 ×10-2モル)の脱水THF40mlの溶液をTHFが緩やかに還流する速度で滴下した。滴下後、30分還流させグリニヤール試薬を調製し室温に戻した。ここに、アセトアルデヒド 2.6g(6.0 ×10-2モル)を滴下し室温で12時間攪拌した。反応物に飽和塩化アンモニウム水を加え、酢酸エチルを加え有機層が中性になるまで水洗し溶媒を留去して反応混合物 7.3gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル 1.5/ヘキサン8.5)で精製し、ヒドロキシエーテル体6.43gを得た(収率78%)。
【0034】
300ml の耐圧反応器に、上記方法で合成したヒドロキシエーテル体 6.3g(3.8×10-2モル)、Ru/C 0.6gをイソプロピルアルコール(IPA) 100mlに懸濁させ、90℃/0.5MPaの水素圧下3日間攪拌した。
反応液から触媒を濾過し、溶媒を留去後反応混合物 4.9gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル1/ヘキサン9)で精製し、所望の1−(4−メトキシメチルシクロヘキシル)−1−エタノール3.5 gを得た(収率54%、全収率38%)。
【0035】
1H−NMR(CDCl3, 200MHz), δ:
0.80〜2.10(11H,m), 1.17(3H,d,J=6.4Hz,Me), 3.32(2H,d,J=6.4Hz,CH2),
3.33(3H,s,Me), 3.50〜3.80(1H,m,CH)
IR(KBr, neat, cm-1):
3412, 2926, 2746, 1665, 1452, 1395, 1338, 1218, 1194, 1092, 933, 870
得られた化合物は木様、かつ花様で軽いミューゲ様香気を有していた。
【0036】
実施例2
2−(4−メトキシメチルシクロヘキシル)−2−プロパノールの合成
【0037】
【化9】
【0038】
ジムロート冷却器、温度計のついた 200mlの4つ口フラスコに、マグネシウム粉末 1.7g(7.2 ×10-2モル)と脱水THF20mlを加え、攪拌しながら実施例1で合成したメチルエーテル体12g(5.9 ×10-2モル)の脱水THF40mlの溶液をTHFが緩やかに還流する速度で滴下した。滴下後、30分還流させグリニヤール試薬を調製し、室温に戻した。ここに、脱水アセトン 4.2g(7.2 ×10-2モル)を滴下し室温で2時間攪拌した。反応物に飽和塩化アンモニウム水を加え、酢酸エチルを加え有機層が中性になるまで水洗し溶媒を留去して反応混合物10gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル 1.5/ヘキサン 8.5)で精製し、ヒドロキシエーテル体 7.3gを得た(収率80%)。
【0039】
300ml の耐圧反応器に、上記方法で合成したヒドロキシエーテル体 7.3g(4.0×10-2モル)、Ru/C 0.7gをIPA 150mlに懸濁させ、90℃/0.5MPaの水素圧下3日間攪拌した。
反応液から触媒を濾過し、溶媒を留去後反応混合物 3.3gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル1/ヘキサン9)で精製し、2−(4−メトキシメチルシクロヘキシル)−2−プロパノール 1.7gを得た(収率30%、全収率22%)。
【0040】
1H−NMR(CDCl3, 200MHz), δ:
0.80〜2.10(11H,m), 1.16(6H,s,2Me), 3.18(2H,d,J=6.6Hz,CH2),
3.34(3H,s,Me)
IR(KBr, neat, cm-1):
3472, 2932, 2860, 1872, 1452, 1568, 1197, 1149, 1110, 954, 912
得られた化合物は木様香気を有していた。
【0041】
実施例3
4−(1−メトキシエチル)シクロヘキシルメタノール
【0042】
【化10】
【0043】
ジムロート冷却器、温度計のついた500ml の4つ口フラスコに、60%水素化ナトリウム11.6g(0.30モル)とTHF150ml を加え、攪拌しながら4−ブロモ−α−メチルベンジルアルコール50g(0.25モル)をTHF100ml に溶解し滴下した。滴下後、気体の発生に注意しながらヨウ化メチル42g(0.30モル)をゆっくり滴下し一晩室温で攪拌した。反応物を 100℃に昇温し、THFを留去後室温まで冷却し水を加え、過剰の水素化ナトリウムを分解した。反応物に酢酸エチルを加え、有機層が中性になるまで水洗し溶媒を留去してメチルエーテル体53gを得た(収率93%)。
【0044】
ジムロート冷却器、温度計、ガス導入管のついた 200mlの4つ口フラスコに、マグネシウム粉末 1.7g(7.2 ×10-2モル)と脱水THF50mlを加え、攪拌しながら上記方法で合成したメチルエーテル体12g(5.6 ×10-2モル)の脱水THF30mlの溶液をTHFが緩やかに還流する速度で滴下した。滴下後、30分還流させグリニヤール試薬を調製し室温に戻した。ここに、パラホルムアルデヒドを分解して発生させたホルマリンガスを導入し室温で2時間攪拌した。反応物に飽和塩化アンモニウム水を加え、酢酸エチルを加え有機層が中性になるまで水洗し溶媒を留去して反応混合物 8.5gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル2/ヘキサン8)で精製し、ヒドロキシエーテル体 7.5gを得た(収率80%)。
【0045】
300mlの耐圧反応器に、上記方法で合成したヒドロキシエーテル体 7.5g(4.3×10-2モル)、Ru/C 0.75gをIPA 150mlに懸濁させ、90℃/0.5MPaの水素圧下7日間攪拌した。
反応液から触媒を濾過し、溶媒を留去後反応混合物 3.3gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル 1.5/ヘキサン8.5)で精製し、所望の4−(1−メトキシエチル)シクロヘキシルメタノールを1.5 g得た(収率20%、全収率15%)。
【0046】
1H−NMR(CDCl3, 200MHz), δ:
0.80〜2.10(11H,m), 1.09(3H,d,J=6.4Hz,Me), 2.90〜3.30(H,m,CH),
3.32(3H,s,Me), 3.56(2H,bd,J=6.2Hz,CH2)
IR(KBr, neat, cm-1):
3412, 2926, 2134, 1938, 1647, 1452, 1380, 1191, 1086, 960, 918, 897,
840, 666
得られた化合物は花様、かつ木様で軽いミューゲ様香気を有していた。
【0047】
実施例4
4−(1−エトキシエチル)シクロヘキシルメタノール
【0048】
【化11】
【0049】
ジムロート冷却器、温度計のついた 500mlの4つ口フラスコに、60%水素化ナトリウム11.6g(0.30モル)とTHF150ml を加え、攪拌しながら4−ブロモ−α−メチルベンジルアルコール50g(0.25モル)をTHF100ml に溶解し滴下した。滴下後、気体の発生に注意しながら臭化エチル33g(0.30モル)をゆっくり滴下し一晩室温で攪拌した。反応物を 100℃に昇温し、THFを留去後室温まで冷却し水を加え、過剰の水素化ナトリウムを分解した。反応物に酢酸エチルを加え、有機層が中性になるまで水洗し溶媒を留去してエチルエーテル体50gを得た(収率87%)。
【0050】
得られたエチルエーテル体10gを実施例3記載の方法でホルマリンガスと反応させ、水素添加を行うことにより所望の4−(1−エトキシエチル)シクロヘキシルメタノールを3g得た(全収率32%)。
【0051】
1H−NMR(CDCl3, 200MHz), δ:
0.80〜2.10(11H,m), 1.09(3H,d,J=6.2Hz,Me), 1.18(3H,t,J=6.1Hz,Me),
3.12(1H,dq,J=6.2Hz,CH), 3.20〜3.70(4H,m,CH2)
IR(KBr, neat, cm-1):
3424, 2974, 2920, 2866, 2320, 1578, 1452, 1377, 1338, 1200, 1104,
1035, 975, 948, 897, 843, 792
得られた化合物は花様、かつ木様で軽いミューゲ様香気を有していた。
【0052】
実施例5
1−{4−(1−メトキシエチル)シクロヘキシル}−1−エタノールの製造
【0053】
【化12】
【0054】
500ml の耐圧反応器に、1,4 −ジアセチルベンゼン30g(0.19モル)、Ru/C 1.5 gをイソプロピルアルコール 250mlに懸濁させ、90℃/0.6MPaの水素圧下3日間攪拌した。
反応液から触媒を濾過し、溶媒を留去後反応混合物26gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル3/ヘキサン7)で精製し、1−{4−(1−ヒドロキシエチル)シクロヘキシル}−1−エタノール16gを得た(収率63%)。
【0055】
ジムロート冷却器、温度計のついた 300mlの4つ口フラスコに、63%水素化ナトリウム 3.7g(9.4 ×10-2モル)を無水THF60mlに懸濁させ、上記で得られたジオール16g(9.4 ×10-2モル)を30mlの無水THFに溶かした溶液を加え、ついでヨウ化メチル20g(0.14モル)を加え、60℃で1時間攪拌した。THFを留去後、氷水を50ml加え酢酸エチルで抽出した。有機層が中性になるまで水洗し溶媒を留去後蒸留して反応混合物16gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル3/ヘキサン17)で精製し、目的とする1−{4−(1−メトキシエチル)シクロヘキシル}−1−エタノール 5.4gを得た(収率46%、全収率29%)。
【0056】
1H−NMR(CDCl3, 200MHz),δ:
0.80〜2.10(11H,m), 1.15(3H,d,J=6.2Hz,Me), 1.20(3H,d,J=6.2Hz,Me),
3.23(1H,m,CH), 3.32(3H,s,Me), 3.75(1H,m,CH)
IR(KBr, neat, cm-1):
3432, 2932, 1456, 1376, 1192, 1096
得られた化合物は花様でミューゲ様香気を有していた。
【0057】
実施例6
1−{4−(1−メトキシプロピル)シクロヘキシル}−1−エタノール
【0058】
【化13】
【0059】
ジムロート冷却器、温度計のついた 200mlの4つ口フラスコに、4−ブロモ−α−メチルベンジルアルコール25g(0.12モル)、ジヒドロピラン(DHP)11g、パラトルエンスルホン酸2g、塩化メチレン100ml を加え、室温で1晩攪拌した。反応物を0℃に冷却し、飽和重炭酸ソーダ水、酢酸エチルを加え、有機層が中性になるまで水洗し溶媒を留去して反応混合物38gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル0.5 /ヘキサン 9.5)で精製し、テトラヒドロピラニルエーテル23gを得た(収率67%)。
【0060】
テトラヒドロピラニルエーテル11.5g(4.1 ×10-2モル)を実施例1と同様の方法でグリニヤール試薬を調製し、プロピオンアルデヒド 2.8gを反応させた。
得られた反応混合物を精製後、水素化ナトリウム 1.2g(2.9 ×10-2モル)とヨウ化メチル4.15gでメチル化後、40mlのメタノール中パラトルエンスルホン酸でテトラヒドロピラニルエーテル基を除去した。飽和重炭酸ソーダ水で中和後酢酸エチルで抽出し、得られた有機層を飽和食塩水で洗浄後、溶媒を留去した。シリカゲルカラムクロマトグラフィーにより(酢酸エチル1/ヘキサン9)精製し得られた 2.6gのメチルエーテル体を実施例1と同様に水素添加し精製することにより所望の1−{4−(1−メトキシプロピル)シクロヘキシル}−1−エタノールを 0.8g得た(全収率7%)。
【0061】
1H−NMR(CDCl3, 200MHz),δ:
0.80〜2.10(11H,m), 1.90(3H,t,J=6.2Hz,Me), 1.18(3H,d,J=6.2Hz,Me),
2.80〜3.25(1H,m,CH), 3.35(3H,s,Me), 3.50〜3.90(1H,m,CH)
IR(KBr, neat, cm-1):
3466, 2932, 2452, 1578, 1455, 1374, 1341, 1095, 936, 897, 675, 582
得られた化合物は花様でミューゲ様の香気を有していた。
【0062】
実施例7
2−{4−(1−メトキシエチル)シクロヘキシル}−2−プロパノール
【0063】
【化14】
【0064】
実施例3のホルマリンガスの代わりに無水アセトンを用いた他は実施例3と全く同様にして所望の2−{4−(1−メトキシエチル)シクロヘキシル}−2−プロパノールを得た(全収率36%)。
【0065】
1H−NMR(CDCl3, 200MHz),δ:
0.80〜2.20(11H,m), 1.11(3H,d,J=6.2Hz,Me), 1.18(6H,s,2Me),
3.02(1H,q,J=6.2Hz,CH), 3.34(3H,s,Me)
IR(KBr, neat, cm-1):
3466, 2926, 2158, 1635, 1560, 1455, 1380, 1197, 1110, 912, 849
得られた化合物は木様で白檀様香気を有していた。
【0066】
実施例8
4−(1−メチル−1−メトキシエチル)シクロヘキシルメタノール
【0067】
【化15】
【0068】
ジムロート冷却器、温度計のついた 300mlの4つ口フラスコに、4−ブロモベンジルアルコール20g(0.11モル)、DHP10g、パラトルエンスルホン酸2g、塩化メチレン 100mlを加え、室温で1晩攪拌した。反応物を0℃に冷却し、飽和重炭酸ソーダ水、酢酸エチルを加え、有機層が中性になるまで水洗し溶媒を留去して反応混合物30gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル 0.5/ヘキサン9.5)で精製し、テトラヒドロピラニルエーテル17gを得た(収率57%)。
【0069】
ジムロート冷却器、温度計のついた200ml の4つ口フラスコに、マクネシウム粉末 1.7g(7.2 ×10-2モル)と脱水THF20mlを加え、攪拌しながら上記方法で合成したテトラヒドロピラニルエーテル17g(6.1 ×10-2モル)の脱水THF30mlの溶液をTHFが緩やかに還流する速度で滴下した。滴下後、30分還流させグリニヤール試薬を調製し室温に戻した。ここに、無水アセトン 4.2g(7.2 ×10-2モル)を滴下し室温で2時間攪拌した。反応物に飽和塩化アンモニウム水を加え、酢酸エチルを加え有機層が中性になるまで水洗し溶媒を留去して反応混合物19gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル 1.5/ヘキサン 8.5)で精製し、アルコール体11gを得た(収率65%)。
【0070】
ジムロート冷却器、温度計のついた 200mlの4つ口フラスコに、60%水素化ナトリウム 1.9g(5.1 ×10-2モル)を無水THF25mlに懸濁させ、上記で得られたアルコール体11g(4.2 ×10-2モル)を25mlの無水THFに溶かした溶液を加え、ついでヨウ化メチル 7.2g(4.2 ×10-2モル)を加え、60℃で1時間攪拌した。THFを留去後、氷水を50ml加え酢酸エチルで抽出した。有機層が中性になるまで水洗し溶媒を留去後蒸留して反応混合物11gを得た。
【0071】
次いでこの混合物にパラトルエンスルホン酸0.06gとメタノール60mlを加え、常温で一晩攪拌しテトラヒドロピラニルエーテル基を除去した。反応液に飽和重炭酸ソーダ水を加えpHを中性にし、メタノールを留去後エーテルで抽出し、有機層が中性になるまで水洗し溶媒を留去後蒸留して反応混合物 8.6gを得た(収率99%)。
【0072】
次いでこの混合物を 500mlの耐圧反応器に加え、更にRu/C 0.9gとIPA 250mlを加え、90℃/0.5MPaの水素圧下3日間攪拌した。
反応液から触媒を濾過し、溶媒を留去後反応混合物 4.4gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル 1.5/ヘキサン8.5)で精製し、目的とする4−(1−メチル−1−メトキシエチル)シクロヘキシルメタノール 1.1gを得た(収率19%、全収率7%)。
【0073】
1H−NMR(CDCl3, 200MHz),δ:
0.75〜2.00(10H,m), 1.07(6H,s,2Me), 2.16(1H,bs,OH), 3.16(3H,s,Me)
3.62(2H,d,J=6.4Hz,CH2)
IR(KBr, neat, cm-1):
3412, 2938, 1452, 1368, 1338, 1317, 1242, 1200, 1143, 1107, 1056,
879, 816, 741
得られた化合物は花様香気を有していた。
【0074】
実施例9
1−{4−(1−メチル−1−メトキシエチル)シクロヘキシル}−1−エタノール
【0075】
【化16】
【0076】
ジムロート冷却器、温度計のついた 200mlの4つ口フラスコに、4−ブロモ−α−メチルベンジルアルコール25g(0.12モル)、DHP11g、パラトルエンスルホン酸2g、塩化メチレン100ml を加え、室温で1晩攪拌した。反応物を0℃に冷却し、飽和重炭酸ソーダ水、酢酸エチルを加え、有機層が中性になるまで水洗し溶媒を留去して反応混合物38gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル 0.5/ヘキサン 9.5) で精製し、テトラヒドロピラニルエーテル11gを得た(収率31%)。
【0077】
ジムロート冷却器、温度計のついた 200mlの4つ口フラスコに、マグネシウム粉末 1.0g(4.3×10-2モル)と脱水THF20mlを加え、攪拌しながら上記方法で合成したテトラヒドロピラニルエーテル11g(3.6×10-2モル)の脱水THF30mlの溶液をTHFが緩やかに還流する速度で滴下した。滴下後、30分還流させグリニヤール試薬を調製し室温に戻した。ここに、脱水アセトン 2.5g(4.3×10-2モル)を滴下し室温で2時間攪拌した。反応物に飽和塩化アンモニウム水を加え、酢酸エチルを加え有機層が中性になるまで水洗し溶媒を留去して反応混合物11gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル 1.5/ヘキサン 8.5)で精製し、アルコール体 7.6gを得た(収率72%)。
【0078】
ジムロート冷却器、温度計のついた 200mlの4つ口フラスコに、60%水素化ナトリウム 1.3g(3.4×10-2モル)を無水THF20mlに懸濁させ、上記で得られたアルコール体 7.5g(2.8×10-2モル)を25mlの無水THFに溶かした溶液を加え、ついでヨウ化メチル 4.8g(3.4×10-2モル)を加え、60℃で1時間攪拌した。THFを留去後、氷水を50ml加え酢酸エチルで抽出した。有機層が中性になるまで水洗し溶媒を留去後蒸留して反応混合物 8.0gを得た。
【0079】
次いでこの混合物にパラトルエンスルホン酸0.04gとメタノール40mlを加え、常温で一晩攪拌しテトラヒドロピラニルエーテル基を除去した。反応液に飽和重炭酸ソーダ水を加えpHを中性にし、メタノールを留去後エーテルで抽出し、有機層が中性になるまで水洗し溶媒を留去後蒸留して反応混合物 5.8gを得た(収率97%)。
【0080】
次いでこの混合物を 300mlの耐圧反応器に加え、更にRu/C(含水POLType) 0.6gとIPA 150mlを加え、90℃/0.5MPaの水素圧下3日間攪拌した。
反応液から触媒を濾過し、溶媒を留去後反応混合物 4.7gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル 1.5/ヘキサン 8.5)で精製し、所望の1−{4−(1−メチル−1−メトキシエチル)シクロヘキシル}−1−エタノールを 2.0g得た(収率53%、全収率11%)。
【0081】
1H−NMR(CDCl3, 200MHz),δ:
0.90〜2.20(11H,m), 1.08(6H,s,2Me), 1.21(3H,d,J=6.2Hz,Me),
3.16(3H,s,Me), 3.54(1H,dq,J=6.2Hz,CH)
IR(KBr, neat, cm-1):
3400, 2932, 2734, 2632, 2134, 1944, 1887, 1647, 1455, 1380, 1317,
1269, 1245, 1203, 1110, 1074, 930, 891, 861, 831, 798, 741, 630, 534
得られた化合物は白檀様香気を有していた。
【0082】
実施例10
2−{4−(1−メチル−1−メトキシエチル)シクロヘキシル}−2−プロパノール
【0083】
【化17】
【0084】
500ml の耐圧反応器に、α, α' −ジヒドロキシ−p−ジイソプロピルベンゼン25g(0.13モル) 、Ru/C 2.5 gをIPA 350mlに懸濁させ、90℃/0.6MPaの水素圧下3日間攪拌した。
反応液から触媒を濾過し、溶媒を留去後反応混合物18gを得た。
反応混合物をIPAと酢酸エチル溶媒で再結晶し、2−{4−(1−ヒドロキシ−1−メチルエチル)シクロヘキシル}−2−プロパノール 8.6gを得た(収率71%)。
【0085】
ジムロート冷却器、温度計のついた 500mlの4つ口フラスコに、60%水素化ナトリウム 2.1g(5.2×10-2モル)とTHF50mlを加え、攪拌しながら上記方法で合成したジオール 8.6g(4.3×10-2モル)をTHF200ml に溶解し滴下した。滴下後、気体の発生に注意しながらヨウ化メチル 7.3g(5.2×10-2モル)をゆっくり滴下し一晩室温で攪拌した。反応物を 100℃に昇温し、THFを留去後室温まで冷却し水を加え、過剰の水素化ナトリウムを分解した。反応物に酢酸エチルを加え、有機層が中性になるまで水洗し溶媒を留去後反応混合物 8.9gを得た。
反応混合物をシリカゲルカラムクロマトグラフィー(酢酸エチル2/ヘキサン8)で精製し、所望の2−{4−(1−メチル−1−メトキシエチル)シクロヘキシル}−2−プロパノール 4.2gを得た(収率55%、全収率39%)。
【0086】
1H−NMR(CDCl3, 200MHz),δ:
0.80〜2.00(11H,m), 1.10(6H,s,2Me), 1.18(6H,s,2Me), 3.16(3H,s,Me)
IR(KBr, neat, cm-1):
3466, 1938, 2830, 2128, 1635, 1464, 1368, 1134, 1068, 912, 852
得られた化合物は木様香気を有していた。
【0087】
上記実施例1〜10で得られた本発明化合物(1) 〜(10)の香気及び匂いの持続日数をまとめて表1に示す。
尚、匂いの持続日数は、匂い紙上に本発明化合物(1) 〜(10)をつけ、香気が何日持続するかを観察した。
【0088】
【表1】
【0089】
次に本発明の香料組成物の実施例を示す。
実施例11〜14
下記ミューゲタイプの調合香料 800重量部に本発明化合物(1), (3), (4) 又は(5) を 200重量部加えることにより、柔らかさ・ボリュームのあるフローラル・ミューゲタイプの調合香料が得られた。
【0090】
実施例15〜18
下記白檀タイプの調合香料 800重量部に本発明化合物(2), (7), (9) 又は(10)を 200重量部加えることにより、フローラルな柔らかさと甘くボリュームのある白檀タイプの調合香料が得られた。
【0091】
実施例19〜20
下記洗剤用調合香料 800重量部に本発明化合物(6) 又は(8) を 200重量部加えることにより、柔らかさ・清潔感・花らしさ・甘さのある洗剤用香料が得られた。
【0092】
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a novel cyclohexylalkanol having a floral, woody and muge fragrance excellent in residual fragrance and useful as a fragrance component for toiletries and the like, and a fragrance composition containing the same.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, useful fragrance compounds are known for cyclohexylalkanols. For example, Japanese Patent Publication No. 55-23242 discloses that 4-isopropylcyclohexylmethanol has a flower-like smell reminiscent of Suzuran flowers, and Japanese Patent Publication No. 62-7176 discloses 4-t-butylcyclohexylmethanol. It is described to have sandal-like fragrance. Japanese Patent Publication No. 60-7495 describes that various cyclohexylmethanols have a bad odor removing action.
[0003]
However, the fragrance of a compound is generally completely different depending on a slight difference in structure. Therefore, it is extremely important to synthesize various compounds and study the fragrance to obtain a new fragrance.
[0004]
There are various demands regarding the ingredients for blending fragrances, such as low cost, chemical stability, and a new fragrance. Conventionally, many fragrance materials having a Mugue-like fragrance have been known, but there has been a demand for materials that are stable and have excellent residual fragrance properties.
Therefore, the subject of this invention is providing the novel compound useful as a fragrance | flavor raw material which is stable and excellent in residual fragrance property.
[0005]
[Means for Solving the Problems]
Under such circumstances, the present inventors have synthesized various 4-alkoxyalkylcyclohexylalkanols in order to solve the above-mentioned problems, and as a result of earnestly examining their aromas and blending systems, floral, woody, mugues having excellent residual fragrance properties. The inventors have found novel 4-alkoxyalkylcyclohexyl alkanols that have aroma and are useful for aromatization of a wide range of toiletry products, and have completed the present invention.
[0006]
That is, this invention provides the novel cyclohexyl alkanol represented by general formula (I), and the fragrance | flavor composition characterized by containing this novel cyclohexyl alkanol.
[0007]
[Chemical 2]
[0008]
(Where R 1 , R 2 , R Three And R Four Are the same or different and each represents an alkyl group having 1 to 3 carbon atoms or a hydrogen atom. However, R 1 , R 2 , R Three And R Four Except when all of are hydrogen atoms. R Five Represents an alkyl group having 1 to 3 carbon atoms. )
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
[0010]
The novel cyclohexylalkanols of the present invention are represented by the above general formula (I). In the general formula (I), R 1 , R 2 , R Three , R Four And R Five Examples of the alkyl group having 1 to 3 carbon atoms represented by: include a methyl group, an ethyl group, an n-propyl group, and an isopropyl group.
[0011]
In general formula (I), R 1 And R 2 Preferred as is a hydrogen atom or a methyl group, and R Three And R Four Preferred as is a hydrogen atom, a methyl group or an ethyl group, particularly a hydrogen atom or a methyl group, and R Five Preferred is a methyl group or an ethyl group, particularly a methyl group.
[0012]
A method for producing the novel cyclohexylalkanols of the present invention is shown below.
R in general formula (I) Three And R Four In the case of a compound in which both are hydrogen atoms, it can be produced, for example, by the method shown by the following reaction formula.
[0013]
[Chemical 3]
[0014]
(In the formula, X represents a halogen atom, R 1 , R 2 And R Five Has the same meaning as above. )
That is, the hydroxyl group of p-bromobenzyl alcohol (II) is converted to an alcoholate with an appropriate base such as sodium hydride, sodium hydroxide or potassium hydroxide, and this is converted into an ether form with an alkylating agent such as an alkyl sulfate or alkyl halide. (III). Subsequently, using magnesium metal, it is converted to arylmagnesium bromide and reacted with various carbonyl compounds (IV) to obtain hydroxy ether (V). It can then be hydrogenated with a suitable catalyst, preferably a ruthenium containing catalyst, to give the corresponding cyclohexylalkanol (VI).
[0015]
In general formula (I), R Three Is not a hydrogen atom, but R Four When is a hydrogen atom, for example, it can be produced by the method shown by the following reaction formula.
[0016]
[Formula 4]
[0017]
(Where R 3 ' Represents an alkyl group having 1 to 3 carbon atoms, R 1 , R 2 , R Five And X have the same meaning as described above. )
That is, the hydroxyl group of p-bromobenzylalkylcarbinol (VII) is converted to an alcoholate with an appropriate base such as sodium hydride, sodium hydroxide, or potassium hydroxide, and this is converted with an alkylating agent such as an alkyl sulfate ester or an alkyl halide. It is set as an ether body (VIII). Then, using magnesium metal, it is converted to arylmagnesium bromide and reacted with various carbonyl compounds (IV) to obtain hydroxy ether form (IX). It can then be hydrogenated with a suitable catalyst, preferably a ruthenium-containing catalyst, to give the corresponding cyclohexylalkanol (X).
[0018]
In general formula (I), R Three And R Four When both are not hydrogen atoms, they can be produced, for example, by the method shown by the following reaction formula.
[0019]
[Chemical formula 5]
[0020]
(Where R Four' Represents an alkyl group having 1 to 3 carbon atoms, R 1 , R 2 , R Five , R 3 ' And X have the same meaning as described above. )
That is, the hydroxyl group of p-bromobenzylalkylcarbinol (XI) is protected with an appropriate protecting group such as dihydropyran to obtain compound (XII), and then converted to arylmagnesium bromide using metal magnesium. Reaction with a carbonyl compound (XIII) gives a hydroxy ether form (XIV). Next, the hydroxyl group is converted to an alcoholate with an appropriate base such as sodium hydride, sodium hydroxide, or potassium hydroxide, and this is converted into an ether form (XV) with an alkylating agent such as an alkyl sulfate or an alkyl halide. In a solvent such as methanol, the tetrahydropyranyl ether group of the ether form (XV) is removed in the presence of a suitable acid catalyst such as sulfuric acid, phosphoric acid, p-toluenesulfonic acid, etc. to obtain a hydroxy ether form (XVI), and then suitable. The corresponding cyclohexylalkanol (XVII) can be obtained by hydrogenation with a suitable catalyst, preferably a ruthenium-containing catalyst.
[0021]
In general formula (I), R 1 And R Three Is a methyl group and R 2 And R Four Can be produced more easily by, for example, the method shown by the following reaction formula.
[0022]
[Chemical 6]
[0023]
(Where R Five Has the same meaning as above. )
That is, 1,4-diacetoxybenzene (XVIII) is hydrogenated with a ruthenium-containing catalyst to obtain the corresponding diol (XIX). The hydroxyl group of this diol is converted to an alcoholate with 0.5 equivalent of a base, for example, sodium hydride, sodium hydroxide, potassium hydroxide, etc., and this is converted to an ether form (XX) with an alkylating agent such as an alkyl sulfate or an alkyl halide. By doing so, the target 1- {4- (1-alkoxyethyl) cyclohexyl} -1-ethanol can be obtained.
[0024]
In general formula (I), R 1 , R 2 , R Three And R Four Are all methyl groups and can be more easily produced, for example, by the following method.
[0025]
[Chemical 7]
[0026]
(Where R Five Has the same meaning as above. )
That is, the corresponding diol (XXII) is obtained by hydrogenating α, α′-dihydroxy-p-diisopropylbenzene (XXI) with a ruthenium-containing catalyst. The hydroxyl group of this diol is converted to an alcoholate with 0.5 equivalent of a base, for example, sodium hydride, sodium hydroxide, potassium hydroxide, etc. Thus, the desired 2- {4- (2-alkoxy-2-propyl) cyclohexyl} -2-propanol can be obtained.
[0027]
The cyclohexyl alkanols represented by the general formula (I) of the present invention obtained by the production method as described above have a flowery, woody and Mugue-like fragrance, and the fragrance has excellent residual fragrance properties. From alone or in combination with other ingredients, it can be used as a flavoring ingredient for soaps, shampoos, rinses, detergents, cosmetics, spray products, fragrances and the like.
[0028]
Moreover, the fragrance | flavor composition of this invention mix | blends the cyclohexyl alkanol represented by general formula (I) with the mixing | blending fragrance | flavor of desired composition.
The blending amount of the cyclohexyl alkanols represented by the general formula (I) in the fragrance composition of the present invention varies depending on the kind of the blended fragrance, the type of the target fragrance, the intensity of the fragrance, etc. % Is preferable, and 0.5 to 50% by weight is particularly preferable.
[0029]
【Example】
EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not restrict | limited by these Examples.
In the following examples, Me represents a methyl group, and Et represents an ethyl group.
[0030]
Example 1
Synthesis of 1- (4-methoxymethylcyclohexyl) -1-ethanol
[0031]
[Chemical 8]
[0032]
To a 200 ml four-necked flask equipped with a Dimroth condenser and thermometer, 4.9 g (0.13 mol) of 60% sodium hydride and 60 ml of tetrahydrofuran (THF) were added, and 19 g (0.11 mol) of 4-bromobenzyl alcohol with stirring. Was dissolved in 30 ml of THF and added dropwise. After the dropwise addition, 18 g (0.13 mol) of methyl iodide was slowly added dropwise and stirred overnight at room temperature. The reaction was heated to 100 ° C., THF was distilled off, cooled to room temperature, and water was added to decompose excess sodium hydride. Ethyl acetate was added to the reaction product, washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 19 g of methyl ether (yield 92%).
[0033]
Into a 200 ml four-necked flask equipped with a Dimroth cooler and thermometer, 1.43 g of magnesium powder (5.9 × 10 -2 Mol) and 20 ml of dehydrated THF, and 10 g (5.0 × 10 5) of methyl ether synthesized by the above method with stirring. -2 Mol) was added dropwise at a rate such that THF slowly refluxed. After the dropwise addition, the mixture was refluxed for 30 minutes to prepare a Grignard reagent and returned to room temperature. Here, 2.6 g of acetaldehyde (6.0 × 10 -2 Mol) was added dropwise and stirred at room temperature for 12 hours. Saturated aqueous ammonium chloride was added to the reaction product, ethyl acetate was added and the mixture was washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 7.3 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 1.5 / hexane 8.5) to obtain 6.43 g of a hydroxy ether form (yield 78%).
[0034]
In a 300 ml pressure-resistant reactor, 6.3 g (3.8 × 10 -2 Mol), 0.6 g of Ru / C was suspended in 100 ml of isopropyl alcohol (IPA), and stirred under a hydrogen pressure of 90 ° C./0.5 MPa for 3 days.
The catalyst was filtered from the reaction solution and the solvent was distilled off to obtain 4.9 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 1 / hexane 9) to obtain 3.5 g of desired 1- (4-methoxymethylcyclohexyl) -1-ethanol (yield 54%, overall yield 38%). ).
[0035]
1 H-NMR (CDCl Three , 200MHz), δ:
0.80 ~ 2.10 (11H, m), 1.17 (3H, d, J = 6.4Hz, Me), 3.32 (2H, d, J = 6.4Hz, CH 2 ),
3.33 (3H, s, Me), 3.50 ~ 3.80 (1H, m, CH)
IR (KBr, neat, cm -1 ):
3412, 2926, 2746, 1665, 1452, 1395, 1338, 1218, 1194, 1092, 933, 870
The obtained compound had a woody, flowery and light Mugue-like fragrance.
[0036]
Example 2
Synthesis of 2- (4-methoxymethylcyclohexyl) -2-propanol
[0037]
[Chemical 9]
[0038]
A 200 ml four-necked flask equipped with a Dimroth cooler and thermometer was charged with 1.7 g of magnesium powder (7.2 × 10 -2 Mole) and 20 ml of dehydrated THF were added, and 12 g (5.9 × 10 6) of the methyl ether synthesized in Example 1 with stirring. -2 Mol) was added dropwise at a rate such that THF was gently refluxed. After the dropwise addition, the mixture was refluxed for 30 minutes to prepare a Grignard reagent and returned to room temperature. Here, 4.2 g of dehydrated acetone (7.2 × 10 -2 Mol) was added dropwise and stirred at room temperature for 2 hours. Saturated aqueous ammonium chloride was added to the reaction product, ethyl acetate was added and the mixture was washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 10 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 1.5 / hexane 8.5) to obtain 7.3 g of a hydroxy ether form (yield 80%).
[0039]
In a 300 ml pressure resistant reactor, 7.3 g (4.0 × 10 -2 Mol), 0.7 g of Ru / C was suspended in 150 ml of IPA and stirred for 3 days under a hydrogen pressure of 90 ° C./0.5 MPa.
The catalyst was filtered from the reaction solution and the solvent was distilled off to obtain 3.3 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 1 / hexane 9) to obtain 1.7 g of 2- (4-methoxymethylcyclohexyl) -2-propanol (yield 30%, total yield 22%).
[0040]
1 H-NMR (CDCl Three , 200MHz), δ:
0.80 ~ 2.10 (11H, m), 1.16 (6H, s, 2Me), 3.18 (2H, d, J = 6.6Hz, CH 2 ),
3.34 (3H, s, Me)
IR (KBr, neat, cm -1 ):
3472, 2932, 2860, 1872, 1452, 1568, 1197, 1149, 1110, 954, 912
The resulting compound had a woody aroma.
[0041]
Example 3
4- (1-methoxyethyl) cyclohexylmethanol
[0042]
Embedded image
[0043]
Add 11.6 g (0.30 mol) of 60% sodium hydride and 150 ml of THF to a 500 ml four-necked flask equipped with a Dimroth condenser and thermometer, and stir with stirring 50 g (0.25 mol) of 4-bromo-α-methylbenzyl alcohol. Was dissolved in 100 ml of THF and added dropwise. After dropping, 42 g (0.30 mol) of methyl iodide was slowly dropped while being careful of gas generation, and stirred overnight at room temperature. The reaction was heated to 100 ° C, THF was distilled off, cooled to room temperature, water was added, and excess sodium hydride was decomposed. Ethyl acetate was added to the reaction product, washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 53 g of methyl ether (yield 93%).
[0044]
In a 200 ml four-necked flask equipped with a Dimroth cooler, thermometer and gas inlet tube, 1.7 g of magnesium powder (7.2 × 10 -2 Mol) and 50 ml of dehydrated THF, and 12 g (5.6 × 10 6) of the methyl ether synthesized by the above method with stirring. -2 Mole) in 30 ml of dehydrated THF was added dropwise at such a rate that THF slowly refluxed. After the dropwise addition, the mixture was refluxed for 30 minutes to prepare a Grignard reagent and returned to room temperature. Here, formalin gas generated by decomposing paraformaldehyde was introduced and stirred at room temperature for 2 hours. Saturated aqueous ammonium chloride was added to the reaction product, ethyl acetate was added thereto, and the mixture was washed with water until the organic layer became neutral.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 2 / hexane 8) to obtain 7.5 g of a hydroxy ether form (yield 80%).
[0045]
In a 300 ml pressure-resistant reactor, 7.5 g (4.3 × 10 -2 Mol), 0.75 g of Ru / C was suspended in 150 ml of IPA and stirred for 7 days under a hydrogen pressure of 90 ° C./0.5 MPa.
The catalyst was filtered from the reaction solution and the solvent was distilled off to obtain 3.3 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 1.5 / hexane 8.5) to obtain 1.5 g of desired 4- (1-methoxyethyl) cyclohexylmethanol (yield 20%, total yield 15%).
[0046]
1 H-NMR (CDCl Three , 200MHz), δ:
0.80 ~ 2.10 (11H, m), 1.09 (3H, d, J = 6.4Hz, Me), 2.90 ~ 3.30 (H, m, CH),
3.32 (3H, s, Me), 3.56 (2H, bd, J = 6.2Hz, CH 2 )
IR (KBr, neat, cm -1 ):
3412, 2926, 2134, 1938, 1647, 1452, 1380, 1191, 1086, 960, 918, 897,
840, 666
The resulting compound had a flowery, woody and light Mugue-like aroma.
[0047]
Example 4
4- (1-Ethoxyethyl) cyclohexylmethanol
[0048]
Embedded image
[0049]
Add 11.6 g (0.30 mol) of 60% sodium hydride and 150 ml of THF to a 500 ml four-necked flask equipped with a Dimroth condenser and thermometer, and stir with stirring 50 g (0.25 mol) of 4-bromo-α-methylbenzyl alcohol. Was dissolved in 100 ml of THF and added dropwise. After dropwise addition, 33 g (0.30 mol) of ethyl bromide was slowly added dropwise while being careful of gas generation, and stirred overnight at room temperature. The reaction was heated to 100 ° C, THF was distilled off, cooled to room temperature, water was added, and excess sodium hydride was decomposed. Ethyl acetate was added to the reaction product, washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 50 g of ethyl ether (yield 87%).
[0050]
10 g of the obtained ethyl ether was reacted with formalin gas by the method described in Example 3 and hydrogenated to obtain 3 g of desired 4- (1-ethoxyethyl) cyclohexylmethanol (total yield: 32%). .
[0051]
1 H-NMR (CDCl Three , 200MHz), δ:
0.80 ~ 2.10 (11H, m), 1.09 (3H, d, J = 6.2Hz, Me), 1.18 (3H, t, J = 6.1Hz, Me),
3.12 (1H, dq, J = 6.2Hz, CH), 3.20 ~ 3.70 (4H, m, CH 2 )
IR (KBr, neat, cm -1 ):
3424, 2974, 2920, 2866, 2320, 1578, 1452, 1377, 1338, 1200, 1104,
1035, 975, 948, 897, 843, 792
The resulting compound had a flowery, woody and light Mugue-like aroma.
[0052]
Example 5
Production of 1- {4- (1-methoxyethyl) cyclohexyl} -1-ethanol
[0053]
Embedded image
[0054]
In a 500 ml pressure-resistant reactor, 30 g (0.19 mol) of 1,4-diacetylbenzene and 1.5 g of Ru / C were suspended in 250 ml of isopropyl alcohol and stirred for 3 days under a hydrogen pressure of 90 ° C./0.6 MPa.
The catalyst was filtered from the reaction solution and the solvent was distilled off to obtain 26 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 3 / hexane 7) to obtain 16 g of 1- {4- (1-hydroxyethyl) cyclohexyl} -1-ethanol (yield 63%).
[0055]
A 300 ml four-necked flask equipped with a Dimroth cooler and thermometer was charged with 3.7 g of 63% sodium hydride (9.4 × 10 -2 Mol) was suspended in 60 ml of anhydrous THF, and 16 g (9.4 × 10 6) of the diol obtained above was suspended. -2 Mol) was dissolved in 30 ml of anhydrous THF, 20 g (0.14 mol) of methyl iodide was added, and the mixture was stirred at 60 ° C. for 1 hour. After distilling off THF, 50 ml of ice water was added and extracted with ethyl acetate. The organic layer was washed with water until neutral, distilled off the solvent and distilled to obtain 16 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 3 / hexane 17) to obtain 5.4 g of the desired 1- {4- (1-methoxyethyl) cyclohexyl} -1-ethanol (yield 46%, Total yield 29%).
[0056]
1 H-NMR (CDCl Three , 200MHz), δ:
0.80 ~ 2.10 (11H, m), 1.15 (3H, d, J = 6.2Hz, Me), 1.20 (3H, d, J = 6.2Hz, Me),
3.23 (1H, m, CH), 3.32 (3H, s, Me), 3.75 (1H, m, CH)
IR (KBr, neat, cm -1 ):
3432, 2932, 1456, 1376, 1192, 1096
The resulting compound was flower-like and had a Muguet-like aroma.
[0057]
Example 6
1- {4- (1-methoxypropyl) cyclohexyl} -1-ethanol
[0058]
Embedded image
[0059]
Add 200 g of 4-bromo-α-methylbenzyl alcohol, 11 g of dihydropyran (DHP), 2 g of paratoluenesulfonic acid, 100 ml of methylene chloride to a 200 ml four-necked flask equipped with a Dimroth condenser and thermometer. Stir at room temperature overnight. The reaction was cooled to 0 ° C., saturated aqueous sodium bicarbonate and ethyl acetate were added, washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 38 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 0.5 / hexane 9.5) to obtain 23 g of tetrahydropyranyl ether (yield 67%).
[0060]
Tetrahydropyranyl ether 11.5 g (4.1 × 10 -2 Mol) was prepared in the same manner as in Example 1 and Grignard reagent was reacted with 2.8 g of propionaldehyde.
After purification of the resulting reaction mixture, 1.2 g of sodium hydride (2.9 x 10 -2 Mol) and 4.15 g of methyl iodide, and the tetrahydropyranyl ether group was removed with paratoluenesulfonic acid in 40 ml of methanol. The mixture was neutralized with saturated aqueous sodium bicarbonate and extracted with ethyl acetate. The obtained organic layer was washed with saturated brine, and the solvent was evaporated. Purification by silica gel column chromatography (ethyl acetate 1 / hexane 9) and 2.6 g of the methyl ether obtained by hydrogenation in the same manner as in Example 1 gave the desired 1- {4- (1-methoxypropyl). ) 0.8 g of cyclohexyl} -1-ethanol was obtained (total yield 7%).
[0061]
1 H-NMR (CDCl Three , 200MHz), δ:
0.80 ~ 2.10 (11H, m), 1.90 (3H, t, J = 6.2Hz, Me), 1.18 (3H, d, J = 6.2Hz, Me),
2.80 to 3.25 (1H, m, CH), 3.35 (3H, s, Me), 3.50 to 3.90 (1H, m, CH)
IR (KBr, neat, cm -1 ):
3466, 2932, 2452, 1578, 1455, 1374, 1341, 1095, 936, 897, 675, 582
The obtained compound had a flower-like and Mugue-like fragrance.
[0062]
Example 7
2- {4- (1-methoxyethyl) cyclohexyl} -2-propanol
[0063]
Embedded image
[0064]
The desired 2- {4- (1-methoxyethyl) cyclohexyl} -2-propanol was obtained in the same manner as in Example 3 except that anhydrous acetone was used in place of the formalin gas of Example 3 (total yield) 36%).
[0065]
1 H-NMR (CDCl Three , 200MHz), δ:
0.80 ~ 2.20 (11H, m), 1.11 (3H, d, J = 6.2Hz, Me), 1.18 (6H, s, 2Me),
3.02 (1H, q, J = 6.2Hz, CH), 3.34 (3H, s, Me)
IR (KBr, neat, cm -1 ):
3466, 2926, 2158, 1635, 1560, 1455, 1380, 1197, 1110, 912, 849
The resulting compound was woody and had a sandalwood-like aroma.
[0066]
Example 8
4- (1-Methyl-1-methoxyethyl) cyclohexylmethanol
[0067]
Embedded image
[0068]
To a 300 ml four-necked flask equipped with a Dimroth condenser and a thermometer, 20 g (0.11 mol) of 4-bromobenzyl alcohol, 10 g of DHP, 2 g of paratoluenesulfonic acid and 100 ml of methylene chloride were added and stirred overnight at room temperature. The reaction was cooled to 0 ° C., saturated aqueous sodium bicarbonate and ethyl acetate were added, washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 30 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 0.5 / hexane 9.5) to obtain 17 g of tetrahydropyranyl ether (57% yield).
[0069]
A 200 ml four-necked flask equipped with a Dimroth cooler and thermometer was charged with 1.7 g (7.2 × 10) of magnesium powder. -2 Mol) and 20 ml of dehydrated THF, and 17 g (6.1 × 10 4) of tetrahydropyranyl ether synthesized by the above method with stirring. -2 Mole) in 30 ml of dehydrated THF was added dropwise at such a rate that THF slowly refluxed. After the dropwise addition, the mixture was refluxed for 30 minutes to prepare a Grignard reagent and returned to room temperature. Here, 4.2 g of anhydrous acetone (7.2 × 10 -2 Mol) was added dropwise and stirred at room temperature for 2 hours. Saturated aqueous ammonium chloride was added to the reaction product, ethyl acetate was added and the mixture was washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 19 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 1.5 / hexane 8.5) to obtain 11 g of an alcohol form (yield 65%).
[0070]
A 200 ml four-necked flask equipped with a Dimroth condenser and thermometer was charged with 1.9 g of 60% sodium hydride (5.1 x 10 -2 Mol) was suspended in 25 ml of anhydrous THF, and 11 g (4.2 × 10 4) of the alcohol obtained above. -2 Mol) in 25 ml of anhydrous THF, and then 7.2 g (4.2 × 10 4) of methyl iodide. -2 Mol) was added and stirred at 60 ° C. for 1 hour. After distilling off THF, 50 ml of ice water was added and extracted with ethyl acetate. The organic layer was washed with water until neutral, distilled off the solvent and distilled to obtain 11 g of a reaction mixture.
[0071]
Next, 0.06 g of paratoluenesulfonic acid and 60 ml of methanol were added to this mixture, and the mixture was stirred overnight at room temperature to remove the tetrahydropyranyl ether group. Saturated sodium bicarbonate water was added to the reaction solution to neutralize the pH, the methanol was distilled off and extracted with ether, washed with water until the organic layer became neutral, the solvent was distilled off and distilled to obtain 8.6 g of a reaction mixture ( Yield 99%).
[0072]
Next, this mixture was added to a 500 ml pressure-resistant reactor, and further 0.9 g of Ru / C and 250 ml of IPA were added and stirred for 3 days under a hydrogen pressure of 90 ° C./0.5 MPa.
The catalyst was filtered from the reaction solution and the solvent was distilled off to obtain 4.4 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 1.5 / hexane 8.5) to obtain 1.1 g of the desired 4- (1-methyl-1-methoxyethyl) cyclohexylmethanol (yield 19%, total yield). 7%).
[0073]
1 H-NMR (CDCl Three , 200MHz), δ:
0.75-2.00 (10H, m), 1.07 (6H, s, 2Me), 2.16 (1H, bs, OH), 3.16 (3H, s, Me)
3.62 (2H, d, J = 6.4Hz, CH 2 )
IR (KBr, neat, cm -1 ):
3412, 2938, 1452, 1368, 1338, 1317, 1242, 1200, 1143, 1107, 1056,
879, 816, 741
The resulting compound had a flower-like aroma.
[0074]
Example 9
1- {4- (1-Methyl-1-methoxyethyl) cyclohexyl} -1-ethanol
[0075]
Embedded image
[0076]
To a 200 ml four-necked flask equipped with a Dimroth condenser and a thermometer, add 25 g (0.12 mol) of 4-bromo-α-methylbenzyl alcohol, 11 g of DHP, 2 g of paratoluenesulfonic acid, and 100 ml of methylene chloride. Stir. The reaction was cooled to 0 ° C., saturated aqueous sodium bicarbonate and ethyl acetate were added, washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 38 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 0.5 / hexane 9.5) to obtain 11 g of tetrahydropyranyl ether (yield 31%).
[0077]
A 200 ml four-necked flask equipped with a Dimroth cooler and thermometer was charged with 1.0 g of magnesium powder (4.3 × 10 -2 Mol) and 20 ml of dehydrated THF, and 11 g (3.6 × 10 4) of tetrahydropyranyl ether synthesized by the above method with stirring. -2 Mole) in 30 ml of dehydrated THF was added dropwise at such a rate that THF slowly refluxed. After the dropwise addition, the mixture was refluxed for 30 minutes to prepare a Grignard reagent and returned to room temperature. Here, 2.5 g of dehydrated acetone (4.3 × 10 -2 Mol) was added dropwise and stirred at room temperature for 2 hours. Saturated aqueous ammonium chloride was added to the reaction product, ethyl acetate was added and the mixture was washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 11 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 1.5 / hexane 8.5) to obtain 7.6 g of an alcohol form (yield 72%).
[0078]
A 200 ml four-necked flask equipped with a Dimroth cooler and thermometer was charged with 1.3 g of 60% sodium hydride (3.4 × 10 -2 Mol) was suspended in 20 ml of anhydrous THF, and 7.5 g (2.8 × 10 6) of the alcohol obtained above was suspended. -2 Mol) in 25 ml of anhydrous THF, and then 4.8 g of methyl iodide (3.4 × 10 -2 Mol) was added and stirred at 60 ° C. for 1 hour. After distilling off THF, 50 ml of ice water was added and extracted with ethyl acetate. The organic layer was washed with water until neutrality, the solvent was distilled off, and distilled to obtain 8.0 g of a reaction mixture.
[0079]
Next, 0.04 g of paratoluenesulfonic acid and 40 ml of methanol were added to this mixture, and the mixture was stirred overnight at room temperature to remove the tetrahydropyranyl ether group. Saturated sodium bicarbonate water was added to the reaction solution to neutralize the pH, methanol was distilled off and extracted with ether, washed with water until the organic layer became neutral, the solvent was distilled off and distilled to obtain 5.8 g of a reaction mixture ( Yield 97%).
[0080]
Next, this mixture was added to a 300 ml pressure-resistant reactor, 0.6 g of Ru / C (hydrous POLType) and 150 ml of IPA were further added, and the mixture was stirred for 3 days under a hydrogen pressure of 90 ° C./0.5 MPa.
The catalyst was filtered from the reaction solution and the solvent was distilled off to obtain 4.7 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 1.5 / hexane 8.5) to obtain 2.0 g of desired 1- {4- (1-methyl-1-methoxyethyl) cyclohexyl} -1-ethanol (yield) 53%, total yield 11%).
[0081]
1 H-NMR (CDCl Three , 200MHz), δ:
0.90 ~ 2.20 (11H, m), 1.08 (6H, s, 2Me), 1.21 (3H, d, J = 6.2Hz, Me),
3.16 (3H, s, Me), 3.54 (1H, dq, J = 6.2Hz, CH)
IR (KBr, neat, cm -1 ):
3400, 2932, 2734, 2632, 2134, 1944, 1887, 1647, 1455, 1380, 1317,
1269, 1245, 1203, 1110, 1074, 930, 891, 861, 831, 798, 741, 630, 534
The compound obtained had a sandalwood-like aroma.
[0082]
Example 10
2- {4- (1-methyl-1-methoxyethyl) cyclohexyl} -2-propanol
[0083]
Embedded image
[0084]
In a 500 ml pressure-resistant reactor, 25 g (0.13 mol) of α, α′-dihydroxy-p-diisopropylbenzene and 2.5 g of Ru / C were suspended in 350 ml of IPA and stirred for 3 days under a hydrogen pressure of 90 ° C./0.6 MPa.
The catalyst was filtered from the reaction solution and the solvent was distilled off to obtain 18 g of a reaction mixture.
The reaction mixture was recrystallized with IPA and an ethyl acetate solvent to obtain 8.6 g of 2- {4- (1-hydroxy-1-methylethyl) cyclohexyl} -2-propanol (yield 71%).
[0085]
A 500 ml four-necked flask equipped with a Dimroth condenser and thermometer was charged with 2.1 g of 60% sodium hydride (5.2 × 10 -2 Mol) and 50 ml of THF, and 8.6 g (4.3 × 10 6) of the diol synthesized by the above method with stirring. -2 Mol) was dissolved in 200 ml of THF and added dropwise. After dropping, 7.3 g (5.2 × 10 -2 Mol) was slowly added dropwise and stirred overnight at room temperature. The reaction was heated to 100 ° C, THF was distilled off, cooled to room temperature, water was added, and excess sodium hydride was decomposed. Ethyl acetate was added to the reaction product, washed with water until the organic layer became neutral, and the solvent was distilled off to obtain 8.9 g of a reaction mixture.
The reaction mixture was purified by silica gel column chromatography (ethyl acetate 2 / hexane 8) to obtain 4.2 g of desired 2- {4- (1-methyl-1-methoxyethyl) cyclohexyl} -2-propanol (yield) 55%, total yield 39%).
[0086]
1 H-NMR (CDCl Three , 200MHz), δ:
0.80 ~ 2.00 (11H, m), 1.10 (6H, s, 2Me), 1.18 (6H, s, 2Me), 3.16 (3H, s, Me)
IR (KBr, neat, cm -1 ):
3466, 1938, 2830, 2128, 1635, 1464, 1368, 1134, 1068, 912, 852
The resulting compound had a woody aroma.
[0087]
Table 1 summarizes the duration of fragrance and odor duration of the compounds (1) to (10) of the present invention obtained in Examples 1 to 10 above.
The odor duration was determined by adding the compounds (1) to (10) of the present invention on the odor paper and observing how many days the aroma lasts.
[0088]
[Table 1]
[0089]
Next, examples of the fragrance composition of the present invention are shown.
Examples 11-14
By adding 200 parts by weight of the compound (1), (3), (4) or (5) of the present invention to 800 parts by weight of the following muge-type blended fragrance, a soft and voluminous floral mugue-type blended fragrance is obtained. Obtained.
[0090]
Examples 15-18
By adding 200 parts by weight of the compound (2), (7), (9) or (10) of the present invention to 800 parts by weight of the following sandalwood-type compounding fragrance, the sandalwood-type compounding fragrance has a soft and sweet volume. Obtained.
[0091]
Examples 19-20
By adding 200 parts by weight of the present compound (6) or (8) to 800 parts by weight of the following blended fragrance for detergent, a detergent fragrance having softness, cleanliness, floweriness and sweetness was obtained.
[0092]
Claims (5)
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JP23079297A JP4027471B2 (en) | 1997-08-27 | 1997-08-27 | Novel cyclohexylalkanols and perfume compositions containing the same |
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JP23079297A JP4027471B2 (en) | 1997-08-27 | 1997-08-27 | Novel cyclohexylalkanols and perfume compositions containing the same |
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PL2726450T3 (en) | 2011-07-01 | 2018-05-30 | Basf Se | Ethers of bis(hydroxymethyl)cyclohexanes |
PL3110931T3 (en) | 2013-12-20 | 2018-09-28 | Basf Se | Novel aroma chemicals |
JP2017535554A (en) | 2014-11-18 | 2017-11-30 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | Process for the preparation of 1- (2,6,6-trimethylcyclohexyl) -alkane-3-ol |
EP3233780B1 (en) | 2014-12-19 | 2018-08-01 | Basf Se | 1-(7,10,10-trimethyl-4-bicyclo(6.2.0)decanyl)ethanone as novel aroma chemical |
EP3233777B1 (en) | 2014-12-19 | 2018-09-12 | Basf Se | Process for preparing 1-[(1r,4r/s,8s)-10,10-dimethyl-7-methylene-4-bicyclo[6.2.0]decanyl]ethanone |
CN107690430A (en) | 2015-05-29 | 2018-02-13 | 巴斯夫欧洲公司 | The method for manufacturing cyclic ester |
JP2018516257A (en) | 2015-05-29 | 2018-06-21 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | Novel perfume having 1,2,2-trimethylcyclopentan-1-yl moiety |
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