JP2009023949A - Barbituric acid compound - Google Patents

Barbituric acid compound Download PDF

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JP2009023949A
JP2009023949A JP2007188727A JP2007188727A JP2009023949A JP 2009023949 A JP2009023949 A JP 2009023949A JP 2007188727 A JP2007188727 A JP 2007188727A JP 2007188727 A JP2007188727 A JP 2007188727A JP 2009023949 A JP2009023949 A JP 2009023949A
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barbituric acid
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JP2009023949A5 (en
JP5148188B2 (en
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Tomoyuki Kinoshita
智之 木下
Akihiro Kosaka
明宏 高坂
Takashi Yoshida
高史 吉田
Hiroyuki Sasaki
浩之 佐々木
Yojiro Kumagai
洋二郎 熊谷
Masatoshi Miyasato
将敬 宮里
Kenichi Fujii
謙一 藤井
Taizo Nishimoto
泰三 西本
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Mitsui Chemicals Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a new barbituric acid compound that is useful as an intermediate for pharmaceuticals, agrochemicals and various industrial chemicals, particularly useful as an intermediate for dyes and pigments. <P>SOLUTION: The barbituric acid compound is represented by general formula (1) (wherein R<SB>1</SB>is a hydrogen atom, a substituted or unsubstituted alkyl group or a substituted or unsubstituted phenyl group). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、医薬、農薬、各種工業薬品の中間体として有用であり、特に染料、顔料の中間体として有用である、新規なバルビツール酸化合物に関するものである。   The present invention relates to a novel barbituric acid compound which is useful as an intermediate for pharmaceuticals, agricultural chemicals and various industrial chemicals, and particularly useful as an intermediate for dyes and pigments.

バルビツール酸化合物を原料としたオキソノール化合物は、追記型光情報記録媒体(光ディスク)の記録層用色素にも使用されている。光ディスクの製造工程において、記録層用色素を2,2,3,3−テトラフルオロ−1−プロパノール(以後、TFPと略す)に溶解して塗布溶液を調製し、スピンコートすることにより記録層を形成する工程がある。このため、TFPに対する十分な溶解性を有する、記録層用色素が要望されている。   Oxonol compounds using barbituric acid compounds as raw materials are also used as recording layer dyes for write-once optical information recording media (optical disks). In the optical disc manufacturing process, the recording layer dye is dissolved in 2,2,3,3-tetrafluoro-1-propanol (hereinafter abbreviated as TFP) to prepare a coating solution, and the recording layer is formed by spin coating. There is a process to form. For this reason, there is a demand for a recording layer dye having sufficient solubility in TFP.

ジメチルバルビツール酸を原料として用いたバルビツール酸系色素の例が特許文献1及び2において開示されており、バルビツール酸オキソノール化合物について特許文献3及び4に開示されている。特許文献5においてハロゲン化アルキル基を有するバルビツール酸についての記載があるが、トリフルオロエチル基が導入されたバルビツール酸の具体例はない。
特開平10−309872 特開2002−46354 特開平4−352151 特開平7−102179 国際公開第03/037262号パンフレット 特開2002−102179 特開平11−279157 特開2002−265456
Examples of barbituric acid dyes using dimethyl barbituric acid as a raw material are disclosed in Patent Documents 1 and 2, and barbituric acid oxonol compounds are disclosed in Patent Documents 3 and 4. Patent Document 5 describes a barbituric acid having a halogenated alkyl group, but there is no specific example of a barbituric acid into which a trifluoroethyl group has been introduced.
JP 10-309872 A JP 2002-46354 A JP-A-4-352151 JP-A-7-102179 International Publication No. 03/037262 Pamphlet JP 2002-102179 A JP-A-11-279157 JP 2002-265456 A

本発明は、医薬、農薬、各種工業薬品の中間体として有用であり、特に染料、顔料の中間体として有用である、新規なバルビツール酸化合物に関するものである。特にTFPに対する溶解性に優れるオキソノール系色素の中間体である、新規なバルビツール酸化合物を提供することである。   The present invention relates to a novel barbituric acid compound which is useful as an intermediate for pharmaceuticals, agricultural chemicals and various industrial chemicals, and particularly useful as an intermediate for dyes and pigments. In particular, it is to provide a novel barbituric acid compound, which is an intermediate of an oxonol dye having excellent solubility in TFP.

本発明者らは、上記課題を解決すべく鋭意検討を進めた結果、本発明に至った。
即ち、本発明は、下記一般式(1)
As a result of intensive studies to solve the above problems, the present inventors have reached the present invention.
That is, the present invention provides the following general formula (1)

Figure 2009023949
Figure 2009023949

(式(1)中、R1は水素原子、置換又は無置換のアルキル基、置換又は無置換のフェニル基を表す。)
で表されるバルビツール酸化合物である。さらに、R1が水素原子、置換又は無置換の総炭素数1〜12のアルキル基、置換又は無置換の総炭素数6〜12のフェニル基であるものが好ましく、特にR1が水素原子又は炭素数1〜6のフルオロ置換アルキル基であるものが好ましい。
(In formula (1), R 1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group.)
It is the barbituric acid compound represented by these. Further, R 1 is preferably a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, or a substituted or unsubstituted phenyl group having 6 to 12 carbon atoms, and particularly R 1 is a hydrogen atom or What is a C1-C6 fluoro substituted alkyl group is preferable.

本発明によれば、医薬、農薬、各種工業薬品の中間体として有用であり、特に染料、顔料の中間体として有用である、新規なバルビツール酸化合物が得られる。   According to the present invention, a novel barbituric acid compound is obtained that is useful as an intermediate for pharmaceuticals, agricultural chemicals, and various industrial chemicals, and particularly useful as an intermediate for dyes and pigments.

以下、本発明を詳細に説明する。
本発明のバルビツール酸化合物は、下記一般式(1)で表される。
Hereinafter, the present invention will be described in detail.
The barbituric acid compound of the present invention is represented by the following general formula (1).

Figure 2009023949
Figure 2009023949

(式(1)中、R1は水素原子、置換又は無置換のアルキル基、置換又は無置換のフェニル基を表す。) (In formula (1), R 1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group.)

一般式(1)において、Rは水素原子、置換又は無置換の総炭素数1〜12のアルキル基、置換又は無置換の総炭素数6〜12のフェニル基が好ましく、特に炭素数1〜6のフルオロ置換アルキル基が好ましい。ここで、アルキル基は直鎖又は分岐鎖であってもよく、環を形成した部分を有していてもよい。Rの置換又は無置換の総炭素数1〜12のアルキル基の例としては、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、1−メチルプロピル基、ヘキシル基、シクロヘキシル基、オクチル基、2−メトキシエチル基、2−エトキシエチル基、3−エトキシプロピル基、1−(メトキシメチル)プロピル基、2−ヒドロキシエチル基、1−(ヒドロキシメチル)プロピル基、シアノメチル基、ベンジル基、4−メトキシベンジル基、4−フルオロベンジル基、メトキシカルボニルメチル基、エトキシカルボニルメチル基、メチルアミノカルボニルメチル基、トリフルオロメチル基、2,2,2−トリフルオロエチル基、2,2,3,3−テトラフルオロプロピル基、2,2,3,3,3−ペンタフルオロプロピル基、1−(1,1,1−トリフルオロメチル)−2,2,2−トリフルオロエチル基、1H,1H,2H,2H−ノナフルオロヘキシル基、2−クロロエチル基、3−クロロプロピル基、2−ブロモエチル基、3−ブロモプロピル基が挙げられる。
が置換又は無置換の総炭素数6〜12のフェニル基の例としては、フェニル基、4−メチルフェニル基、2−メチルフェニル基、4−メトキシフェニル基、2−メトキシフェニル基、4−フルオロフェニル基、2−フルオロフェニル基、4−ブロモフェニル基、2−ブロモフェニル基、4−(トリフルオロメチル)フェニル基、4−アセチルフェニル基が挙げられる。
In formula (1), R 1 is hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted total phenyl group having a carbon number of 6 to 12 are preferred, especially 1 carbon atoms Six fluoro-substituted alkyl groups are preferred. Here, the alkyl group may be linear or branched, and may have a ring-forming portion. Examples of the substituted or unsubstituted alkyl group having 1 to 12 carbon atoms of R 1 are methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, 1-methylpropyl group, hexyl group, cyclohexyl Group, octyl group, 2-methoxyethyl group, 2-ethoxyethyl group, 3-ethoxypropyl group, 1- (methoxymethyl) propyl group, 2-hydroxyethyl group, 1- (hydroxymethyl) propyl group, cyanomethyl group, Benzyl group, 4-methoxybenzyl group, 4-fluorobenzyl group, methoxycarbonylmethyl group, ethoxycarbonylmethyl group, methylaminocarbonylmethyl group, trifluoromethyl group, 2,2,2-trifluoroethyl group, 2,2 , 3,3-tetrafluoropropyl group, 2,2,3,3,3-pentafluoropropyl Group, 1- (1,1,1-trifluoromethyl) -2,2,2-trifluoroethyl group, 1H, 1H, 2H, 2H-nonafluorohexyl group, 2-chloroethyl group, 3-chloropropyl group , 2-bromoethyl group and 3-bromopropyl group.
Examples of the phenyl group having 6 to 12 total carbon atoms in which R 1 is substituted or unsubstituted include a phenyl group, a 4-methylphenyl group, a 2-methylphenyl group, a 4-methoxyphenyl group, a 2-methoxyphenyl group, 4 -Fluorophenyl group, 2-fluorophenyl group, 4-bromophenyl group, 2-bromophenyl group, 4- (trifluoromethyl) phenyl group, 4-acetylphenyl group can be mentioned.

本発明の一般式(1)で表されるバルビツール酸化合物の具体例を表1および表2に示す。これらの具体例は本発明化合物の範囲を限定するものではない。   Specific examples of the barbituric acid compound represented by the general formula (1) of the present invention are shown in Tables 1 and 2. These specific examples do not limit the scope of the compounds of the present invention.

Figure 2009023949
Figure 2009023949

Figure 2009023949
Figure 2009023949

(バルビツール酸化合物の製造方法)
本発明の前記一般式(1)で表されるバルビツール酸化合物の代表的な製造方法を以下に説明する。
原料である下記の尿素化合物式(2)は、ホスゲン又はクロル蟻酸フェニル等と一当量のトリフルオロエチルアミンを反応させた後、さらに同一あるいは別のアミン類とを反応させること、等により合成することが出来る。特許文献6(特開2002−102179)に尿素合成法に関する記載がある。
(Method for producing barbituric acid compound)
The typical manufacturing method of the barbituric acid compound represented by the general formula (1) of the present invention will be described below.
The following urea compound formula (2), which is a raw material, is synthesized by reacting phosgene or phenyl chloroformate with one equivalent of trifluoroethylamine and then reacting with the same or another amine. I can do it. Patent Document 6 (Japanese Patent Laid-Open No. 2002-102179) describes a urea synthesis method.

次に、バルビツール酸化合物の第一の製造方法としては、下記の合成ルート1に従い合成することができる。   Next, as the first production method of the barbituric acid compound, it can be synthesized according to the following synthesis route 1.

Figure 2009023949
Figure 2009023949

(合成ルート1中、R1は水素原子、置換又は無置換のアルキル基、置換又は無置換のフェニル基を表す。)
合成ルート1では、尿素化合物式(2)1モル量に対して、氷酢酸中、マロン酸を1〜4モル量と無水酢酸を2〜10モル量用いて、50〜120℃で1〜10時間反応する。反応後、水に排出、酢酸エチル等の有機溶媒で抽出、水洗、濃縮後、必要に応じてカラムクロマトグラフィーにて精製することにより、目的とする一般式(1)のバルビツール酸化合物を得ることができる。特許文献7、8(特開平11−279157、特開2002−265456)にバルビツール酸合成法に関する記載がある。
(In Synthesis Route 1, R 1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group.)
In Synthesis Route 1, 1 to 10 moles of malonic acid and 1 to 10 moles of acetic anhydride are used in glacial acetic acid at 1 to 10 moles per mole of urea compound formula (2). React for hours. After the reaction, the product is discharged into water, extracted with an organic solvent such as ethyl acetate, washed with water, concentrated, and purified by column chromatography as necessary to obtain the target barbituric acid compound of the general formula (1). be able to. Patent Documents 7 and 8 (Japanese Patent Laid-Open Nos. 11-279157 and 2002-265456) have a description on a barbituric acid synthesis method.

第二の製造方法としては、下記の合成ルート2に従い合成できる。   As a 2nd manufacturing method, it can synthesize | combine according to the following synthetic route 2.

Figure 2009023949
Figure 2009023949

(合成ルート2中、R1は水素原子、置換又は無置換のアルキル基、置換又は無置換のフェニル基を表す。) (In Synthesis Route 2, R 1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group.)

合成ルート2では、尿素化合物式(2)1モル量に対して、アルコール溶媒中、マロン酸ジエチルを1〜2モル量とナトリウムエトキシドを1〜4モル量用いて、50〜120℃で1〜10時間反応する。アルコール溶媒としては、エタノール、プロパノール等が使用される。反応後、希塩酸を加え、酢酸エチル等の有機溶媒で抽出、水洗、濃縮後、必要に応じてカラムクロマトグラフィーにて精製することにより、目的とする一般式(1)のバルビツール酸化合物を得ることができる。例えば、新実験化学講座第14巻にバルビツール酸合成法に関する記載がある。   In the synthetic route 2, 1 to 2 moles of diethyl malonate and 1 to 4 moles of sodium ethoxide in an alcohol solvent are used at 1 to 50 to 120 ° C. with respect to 1 mole of the urea compound formula (2). React for -10 hours. As the alcohol solvent, ethanol, propanol or the like is used. After the reaction, dilute hydrochloric acid is added, extracted with an organic solvent such as ethyl acetate, washed with water, concentrated, and purified by column chromatography as necessary to obtain the target barbituric acid compound of the general formula (1). be able to. For example, New Experimental Chemistry Course Vol. 14 describes the barbituric acid synthesis method.

以下に、実施例により本発明を具体的に説明するが、本発明はこれらの実施例に限定されるものではない。   EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

(実施例1)
(具体例番号1の化合物の合成)
N−(2,2,2−トリフルオロエチル)尿素55.0g、氷酢酸275ml、マロン酸40.3gおよび無水酢酸118.3gを75〜80℃で10時間反応した後、水1200mlに排出し、酢酸エチル600mlにて2回抽出し、水洗、濃縮した後、カラムクロマトグラフィーで精製し、白色結晶 30.3gを得た。
Example 1
(Synthesis of Compound No. 1)
N- (2,2,2-trifluoroethyl) urea (55.0 g), glacial acetic acid (275 ml), malonic acid (40.3 g) and acetic anhydride (118.3 g) were reacted at 75-80 ° C. for 10 hours, and then discharged into 1200 ml of water. The mixture was extracted twice with 600 ml of ethyl acetate, washed with water, concentrated, and purified by column chromatography to obtain 30.3 g of white crystals.

下記分析結果により、目的の具体例番号1の化合物であることを確認した。
ESI−Mass負イオン(M−H):m/z 209
元素分析値(C):
From the following analysis results, it was confirmed that the compound was the target compound of specific example No. 1.
ESI-Mass negative ion (M−H) : m / z 209
Elemental analysis (C 6 H 5 F 3 N 2 O 3):

Figure 2009023949
Figure 2009023949

IRスペクトルを図1に示す。   The IR spectrum is shown in FIG.

(実施例2)
(具体例番号25の化合物の合成)
N,N'−ジ(2,2,2−トリフルオロエチル)尿素55.0g、氷酢酸275ml、マロン酸25.5gおよび無水酢酸75.2gを75〜80℃で10時間反応した後、水1200mlに排出し、酢酸エチル600mlにて2回抽出し、水洗、濃縮した後、カラムクロマトグラフィーで精製し、白色結晶 32.3gを得た。
(Example 2)
(Synthesis of Compound No. 25)
After reacting 55.0 g of N, N′-di (2,2,2-trifluoroethyl) urea, 275 ml of glacial acetic acid, 25.5 g of malonic acid and 75.2 g of acetic anhydride at 75-80 ° C. for 10 hours, The solution was discharged into 1200 ml, extracted twice with 600 ml of ethyl acetate, washed with water, concentrated, and purified by column chromatography to obtain 32.3 g of white crystals.

下記分析結果により、目的の具体例番号25の化合物であることを確認した。
ESI−Mass負イオン(M−H):m/z 291
元素分析値(C):
From the following analysis results, it was confirmed that the compound was the target compound of specific example number 25.
ESI-Mass negative ion (M−H) : m / z 291
Elemental analysis (C 8 H 6 F 6 N 2 O 3):

Figure 2009023949
Figure 2009023949

IRスペクトルを図2に示す。   The IR spectrum is shown in FIG.

(実施例3)
実施例1で合成した具体例番号1のバルビツール酸化合物を用いて、特許文献1、3及び5に記載されている合成法に従い、下記式(A)のオキソノール系化合物を合成し、TFPに対する溶解度を測定した。結果を表5に示す。
(Example 3)
Using the barbituric acid compound of specific example No. 1 synthesized in Example 1, an oxonol-based compound of the following formula (A) was synthesized according to the synthesis methods described in Patent Documents 1, 3 and 5, and against TFP Solubility was measured. The results are shown in Table 5.

Figure 2009023949
Figure 2009023949

(実施例4)
実施例2で合成した具体例番号25のバルビツール酸化合物を用いて、実施例3と同様に、下記式(B)のオキソノール系化合物を合成し、TFPに対する溶解度を測定した。結果を表5に示す。
Example 4
Using the barbituric acid compound of specific example number 25 synthesized in Example 2, an oxonol compound of the following formula (B) was synthesized in the same manner as in Example 3, and the solubility in TFP was measured. The results are shown in Table 5.

Figure 2009023949
Figure 2009023949

(比較例1)
比較用化合物として、1,3−ジメチルバルビツール酸を用いて、特許文献1で化合物No.43として記載されている下記式(C)のオキソノール系化合物を実施例3と同様に合成し、TFPに対する溶解度を測定した。結果を表5に示す。
(Comparative Example 1)
As a compound for comparison, 1,3-dimethylbarbituric acid was used. An oxonol-based compound of the following formula (C) described as 43 was synthesized in the same manner as in Example 3, and the solubility in TFP was measured. The results are shown in Table 5.

Figure 2009023949
Figure 2009023949

(溶解度測定結果) (Solubility measurement results)

Figure 2009023949
Figure 2009023949

表5から明らかなように本発明品のバルビツール酸化合物を中間体として用いた色素が、TFPに対して高い溶解度を有する。   As is apparent from Table 5, the dye using the barbituric acid compound of the present invention as an intermediate has high solubility in TFP.

本発明のバルビツール酸化合物は、医薬、農薬、各種工業薬品の中間体として有用であり、特にTFPに対する溶解性に優れるバルビツール酸系色素の中間体として好適である。   The barbituric acid compound of the present invention is useful as an intermediate for pharmaceuticals, agricultural chemicals, and various industrial chemicals, and is particularly suitable as an intermediate for barbituric acid-based dyes having excellent solubility in TFP.

実施例1で得られた具体例番号1の化合物のIRスペクトル図である。2 is an IR spectrum diagram of the compound of specific example number 1 obtained in Example 1. FIG. 実施例2で得られた具体例番号25の化合物のIRスペクトル図である。4 is an IR spectrum diagram of the compound of specific example number 25 obtained in Example 2. FIG.

Claims (3)

下記一般式(1)で表されるバルビツール酸化合物。
Figure 2009023949
(式(1)中、R1は水素原子、置換又は無置換のアルキル基、置換又は無置換のフェニル基を表す。)
A barbituric acid compound represented by the following general formula (1).
Figure 2009023949
(In formula (1), R 1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group.)
1が水素原子、置換又は無置換の総炭素数1〜12のアルキル基、置換又は無置換の総炭素数6〜12のフェニル基である請求項1記載のバルビツール酸化合物。 The barbituric acid compound according to claim 1 , wherein R 1 is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 12 carbon atoms, or a substituted or unsubstituted phenyl group having 6 to 12 carbon atoms. 1が水素原子又は炭素数1〜6のフルオロ置換アルキル基である請求項2記載のバルビツール酸化合物。 The barbituric acid compound according to claim 2, wherein R 1 is a hydrogen atom or a fluoro-substituted alkyl group having 1 to 6 carbon atoms.
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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003037262A2 (en) * 2001-10-29 2003-05-08 Smithkline Beecham Corporation Novel anit-infectives
WO2007083732A1 (en) * 2006-01-20 2007-07-26 Mitsui Chemicals, Inc. Optical recording medium and azo metal chelate compound

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