JPS58180452A - Anthraquinone derivative - Google Patents

Anthraquinone derivative

Info

Publication number
JPS58180452A
JPS58180452A JP57061157A JP6115782A JPS58180452A JP S58180452 A JPS58180452 A JP S58180452A JP 57061157 A JP57061157 A JP 57061157A JP 6115782 A JP6115782 A JP 6115782A JP S58180452 A JPS58180452 A JP S58180452A
Authority
JP
Japan
Prior art keywords
methyl
formula
pentenyl
anthraquinone
reaction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP57061157A
Other languages
Japanese (ja)
Other versions
JPH0161096B2 (en
Inventor
Shigeaki Numata
繁明 沼田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Kasei Chemicals Ltd
Original Assignee
Kawasaki Kasei Chemicals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kawasaki Kasei Chemicals Ltd filed Critical Kawasaki Kasei Chemicals Ltd
Priority to JP57061157A priority Critical patent/JPS58180452A/en
Publication of JPS58180452A publication Critical patent/JPS58180452A/en
Publication of JPH0161096B2 publication Critical patent/JPH0161096B2/ja
Granted legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Paper (AREA)

Abstract

NEW MATERIAL:The anthraquinone derivative of formula I (Hn is the number of added hydrogen atoms when the double bond of the benzene ring is hydrogenated; n is 0 or 2). EXAMPLE:2-(4-Methyl-3-pentenyl)-anthraquinone of formula II. USE:An alkylanthraquinone-type catalyst for the preparation of H2O2, pulp digestion assistant, and age resistor for rubber. PROCESS:The 2-(2-methyl-3-pentenyl)-1,4,4a,9a-tetrahydroanthraquinone obtained by the Diels-Alder reaction of 1,4-naphthoquinone and myrcene of formula III (=3- methyl-7-methyl-1,6-octadiene), is oxidized with molecular oxygen in the presence of a weak or strong base to obtain the compound of formula I .

Description

【発明の詳細な説明】 本発明は、新規なアントラキノン誘導体の製法に関する
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing novel anthraquinone derivatives.

−1= 本発明のアントラキノン誘導体は、下記の一般式(1)
で表わされる新規な化合物である。
-1= The anthraquinone derivative of the present invention has the following general formula (1)
This is a new compound represented by

上記一般式CI)において、Hnはベンゼン環の二重結
合が水素化された場合における水素付加数を示し、nは
0.2の整数を表わす。
In the general formula CI), Hn represents the number of hydrogen atoms added when the double bond of the benzene ring is hydrogenated, and n represents an integer of 0.2.

上記一般式で表わされる本発明の化合物は、過酸化水素
製造用のアルキルアントラキノン系の触媒、バルブ蒸解
助剤及びゴムの老化防d−剤として用いられる。
The compound of the present invention represented by the above general formula is used as an alkylanthraquinone catalyst for hydrogen peroxide production, a valve cooking aid, and a d-antiaging agent for rubber.

本発明の化合物を具体的に挙げれば、次の(n)式で 表ワサれる2−(4−メチル−3−ペンテニル)=1,
4−ジヒドロアントラキノン、及び次の(Ill)式で
表わされる2−(4−メチル−3−ペンテニル)−アン
トラキノンかある。
Specifically, the compound of the present invention is represented by the following formula (n): 2-(4-methyl-3-pentenyl)=1,
There are 4-dihydroanthraquinone and 2-(4-methyl-3-pentenyl)-anthraquinone represented by the following formula (Ill).

2− 本発明の式〔11〕及び(Ill)の化合物は、1,4
−ナフトキノンとミルセン(3−メチレン−7−ってデ
ィールスアルダー反応せしめて得られる2−(4−メチ
ル−3−ペンテニル) −1,4,4a、 9a=テト
ラヒドロアントラギノン(MPTHAQと略す)を酸化
することによって製造される。
2- The compounds of formulas [11] and (Ill) of the present invention are 1,4
- Naphthoquinone and myrcene (2-(4-methyl-3-pentenyl obtained by Diels-Alder reaction with 3-methylene-7-) -1,4,4a, 9a = tetrahydroanthraginone (abbreviated as MPTHAQ)) Manufactured by oxidation.

式〔ll)で表わされる2−(4−メチル−3−ペンテ
ニル)−1,4−ジヒドロアントラキノン(MPDI(
A、Qと略す)は、MPTHAQ  を弱塩基の存在下
で分子状酸素を用いて酸化することにより製造すること
ができる。
2-(4-methyl-3-pentenyl)-1,4-dihydroanthraquinone (MPDI(
A, Q) can be produced by oxidizing MPTHAQ with molecular oxygen in the presence of a weak base.

弱塩基としては、例えばアンモニア;酢酸すトリウムな
との弱酸塩;モノ−、ジーないしトリエチルアミン、ト
リメチルアミン、ジイソプロピルアミンなとのアミンを
挙げることができる。
Examples of the weak base include ammonia; weak acid salts such as sodium acetate; and amines such as mono-, di-, and triethylamine, trimethylamine, and diisopropylamine.

−−一−′−−1 この反応は、反応媒体の存在F又は不存在下で行うこと
ができるが、反応を円滑に進行させるためには、反応媒
体の存在下で実施する方が好ましい。該反応媒体として
は、水及び有機溶媒が用いられる。有機溶媒としては、
例えばメタ/−ル、エタノール、イソプロパツールなど
のアルコール;アセトン、メチルエチルケトンなどのケ
トン;酢酸エチルなどのエステル;ベンゼン、トルエン
、キシレン、ヘプタン、シクロヘキサンなどの炭化水素
が挙げられるが、好しくは水−エタノール混合溶媒であ
る。反応媒体は原料の約5〜10倍量用いれば十分であ
る。
--1-'--1 This reaction can be carried out in the presence or absence of a reaction medium, but in order for the reaction to proceed smoothly, it is preferably carried out in the presence of a reaction medium. Water and organic solvents are used as the reaction medium. As an organic solvent,
Examples include alcohols such as methanol, ethanol, and isopropanol; ketones such as acetone and methyl ethyl ketone; esters such as ethyl acetate; and hydrocarbons such as benzene, toluene, xylene, heptane, and cyclohexane. -Ethanol mixed solvent. It is sufficient to use the reaction medium in an amount about 5 to 10 times the amount of the raw materials.

反応温度は、一般に約0〜150°C1好ましくは20
〜50°Cである。
The reaction temperature is generally about 0 to 150°C, preferably 20°C.
~50°C.

反応時間は、通常1〜2時間あれば十分である。A reaction time of 1 to 2 hours is usually sufficient.

分子状酸素としては、通常空気が用いられる。Air is usually used as molecular oxygen.

又、1tllPTHAQからMPD)(AQへの酸化方
法としては、」−記の様な分子状酸素による酸化法の他
に、る酸化法も採用しうる。この場合も」−記と同じ温
度条件丁で、反応媒体例えば酢酸、水、メタノール中に
おいて約1〜2倍当量の酸化剤を加えて実施することが
好ましい。
In addition, as a method for oxidizing 1tllPTHAQ to MPD) (AQ), in addition to the oxidation method using molecular oxygen as described in "-", an oxidation method may also be adopted.In this case, the same temperature conditions as in "-" are used. It is preferable to carry out the reaction by adding about 1 to 2 equivalents of the oxidizing agent in a reaction medium such as acetic acid, water, or methanol.

式〔■〕で表わされる2−(4−メチル−3−ペンテニ
ル)アントラキノン(MPAQと略−t)u、MPTH
AQ又はMI? DHA Qのいずれかを強塩基の存在
下で分子状酸素を用いて酸化することにより製造するこ
とかできる。
2-(4-methyl-3-pentenyl) anthraquinone (MPAQ and abbreviated -t) u, MPTH represented by the formula [■]
AQ or MI? Either DHA Q can be prepared by oxidizing it with molecular oxygen in the presence of a strong base.

強塩基としては、例えば水酸化カリウム、水酸化ナトリ
ウムなどの水酸化アルカリ;水酸化テトラメチルアンモ
ニウムなどの水酸化第4級アンモニウムが挙げられる。
Examples of strong bases include alkali hydroxides such as potassium hydroxide and sodium hydroxide; and quaternary ammonium hydroxides such as tetramethylammonium hydroxide.

この反応は、反応媒体の存在下又は不存在下で行うこと
ができるが、反応を円滑に進行させるためには、反応媒
体の存在下で実施する方が好ましい。反応媒体としては
、前述のMPDHAQを製造する場合の反応媒体が同様
に用いられる。
This reaction can be carried out in the presence or absence of a reaction medium, but in order for the reaction to proceed smoothly, it is preferably carried out in the presence of a reaction medium. As the reaction medium, the reaction medium used in producing MPDHAQ described above is similarly used.

反応温度は、通常0〜150”C好ましくは5〜] 0
0 ”Cさらに好ましくは20〜40°Cである。
The reaction temperature is usually 0 to 150"C, preferably 5 to 0
0''C, more preferably 20 to 40C.

反応時間は、約1〜2時間あれば十分である。A reaction time of about 1 to 2 hours is sufficient.

分子状酸素としては、通常空気が用いられる。Air is usually used as molecular oxygen.

しかして得られるMPDHAQ及びMPAQをN材のク
ラフト及びソーダパルプ蒸解に際して、蒸解助剤として
チップの絶乾量に対して002〜05%用いて蒸解した
ところ、無添加の場合に比較して蒸解速度が増大し、蒸
解歩留も高かった。
When MPDHAQ and MPAQ obtained in this way were used as a cooking aid in the cooking of kraft and soda pulp of N material at a rate of 0.02 to 0.05% based on the absolute dry weight of the chips, the cooking rate was found to be faster than when no additive was used. increased, and the cooking yield was also high.

又、過酸化水素の製造用触媒として用いた結果、他のア
ルギルアントラキノンと同じ様な効果を示した。
Furthermore, when used as a catalyst for the production of hydrogen peroxide, it showed similar effects as other argylanthraquinones.

次に、本願発明を実施例によって詳細に説明するが、〔
%〕は、とくに断らないかぎり重量%を表わす。
Next, the present invention will be explained in detail by way of examples.
%] represents weight % unless otherwise specified.

実施例1゜ MPTHAQ 29.49(0,1モル)、酢酸、第二
銅−水塩409 (02モル)、酢酸と水の等情況合物
150#11!及びメタ7−ル3 Q meからなる混
合物を、攪拌下30分で90”Cに加熱し、′、)O″
Cで15分間保持した。次いで、該反応混合物を11の
水に注入し、生成した結晶を戸別し、十分水洗し、窒素
気流丁で乾燥した。得られた生成物をフィルター上にお
き、ベンゼンで抽出した。抽出したベンゼン溶液が無色
になったら抽出を中止し、集められた黄色のベンゼン溶
液からベンゼンを留去し、2779の生成物を得た。こ
の生成物をエタノールから[1j結晶し、白黄色の結晶
20.5)を得た。この結晶の融点は、87〜886°
Cであり、元素分析、質量スペクトル分析、IR分析及
びNMR分析に」:すMPDHAQ(2−(4−メチル
ー:う−ペンテニル)−1,4−ジヒドロアントラギノ
ン)であることを確認した。
Example 1゜MPTHAQ 29.49 (0.1 mol), acetic acid, cupric hydrate 409 (0.2 mol), isotropic compound of acetic acid and water 150 #11! and methanol 3 Q me was heated to 90"C for 30 minutes with stirring, ',)O"
It was held at C for 15 minutes. Next, the reaction mixture was poured into 11 pieces of water, and the crystals formed were separated, thoroughly washed with water, and dried with a nitrogen blanket. The resulting product was placed on a filter and extracted with benzene. When the extracted benzene solution became colorless, the extraction was stopped, and benzene was distilled off from the collected yellow benzene solution to obtain product 2779. This product was crystallized from ethanol to give white-yellow crystals (20.5). The melting point of this crystal is 87-886°
It was confirmed to be MPDHAQ (2-(4-methyl-pentenyl)-1,4-dihydroanthraginone) by elemental analysis, mass spectrometry, IR analysis, and NMR analysis.

分析結果は以下のとおりである。The analysis results are as follows.

(1)元素分析  C2oH2oO2 計算値 082.16% H6,80%実測値 082
.09% H662% (2)  質量スペクトル分析モル質量計算値 292 実測値 292 (3)IR分析  1/ (0=O)  16600m
  1(4)  NMR分析 (、、、ODOC3)δ
1.63 (s、 3H)、1.70 (s、 3H)
、19〜2.3 (br m 、 41()、3.0−
3.3 (br 、 4H)、3.]7 (br s、
 IH)、3.6 (br s、 IH)、7.5−8
.3 (m 、4H)一 実施例2 MPTHAQ 3.09、エタノール30m1および4
N水酸化アンモニウム水溶液15滴からなる混合物を4
0°Cで攪拌しながら、十分な量の空気を液中に導入し
1時間反応した。ついで沖過し、水洗し、乾燥し、生成
物289 (収率93モル%)を得た。この生成物は実
施例1と同様に分析してM P D HA、 Qである
ことを確認した。
(1) Elemental analysis C2oH2oO2 Calculated value 082.16% H6, 80% Actual value 082
.. 09% H662% (2) Mass spectrum analysis molar mass calculation value 292 Actual value 292 (3) IR analysis 1/ (0=O) 16600m
1(4) NMR analysis (,,,ODOC3)δ
1.63 (s, 3H), 1.70 (s, 3H)
, 19-2.3 (br m, 41(), 3.0-
3.3 (br, 4H), 3. ]7 (br s,
IH), 3.6 (br s, IH), 7.5-8
.. 3 (m, 4H) Example 2 MPTHAQ 3.09, ethanol 30ml and 4
A mixture consisting of 15 drops of N ammonium hydroxide aqueous solution was added to 4
While stirring at 0°C, a sufficient amount of air was introduced into the liquid and the reaction was carried out for 1 hour. Then, it was filtered, washed with water, and dried to obtain product 289 (yield: 93 mol%). This product was analyzed in the same manner as in Example 1 and was confirmed to be MPDHA,Q.

実施例3 実施例1で得られたMPDHAQ 29.2り(01モ
ル)をエタノール200 mlに溶解し、次いで該溶液
に水酸化カリウム289を40m1の水に溶解し加えた
。その結果生成した黒ずんた゛混合物中に空気の静かな
る流れを50°Cで2時間導入した。
Example 3 MPDHAQ 29.2 (01 mol) obtained in Example 1 was dissolved in 200 ml of ethanol, and then potassium hydroxide 289 dissolved in 40 ml of water was added to the solution. A gentle stream of air was introduced into the resulting dark mixture at 50° C. for 2 hours.

反応後、生成した黄色沈澱を濾過し、フィルター十で水
とエタノールの等情況合溶液で洗浄し、次いで窒素気流
中で乾燥し、生成物274gを得た。この生成物をエタ
ノールから再結晶して黄色針状結晶2169を得た。こ
の結晶の融点は、91〜925°Cであり、元素分析、
質量スペクトル分析、工R分析、NMR分析により、こ
の結晶がMPAQ−5あることを確認した。分析結果は
以下のとおりである。
After the reaction, the produced yellow precipitate was filtered, washed with an equal solution of water and ethanol through a filter, and then dried in a nitrogen stream to obtain 274 g of product. This product was recrystallized from ethanol to obtain yellow needle crystals 2169. The melting point of this crystal is 91-925°C, and elemental analysis,
This crystal was confirmed to be MPAQ-5 by mass spectrometry, engineering R analysis, and NMR analysis. The analysis results are as follows.

(1)元素分析   020 H1802計算値  0
82.73%’116.25%実測値  082.56
% H604%(2)  質量スペクトル分析 モル質
量計 算 値  290 ; 実測値 290(3)I
R分析   v (0=O)  16700m  1(
4)  NMR(・cDa13) δ1.53 (s、 311)、1..66 (s、 
3H) 、2.43 (t、 2(支)2.73 (d
te、 2H)、5.2 (t、 IH)、75〜80
 (m 、 含H)、q− 8,0〜8.4 (m、 3 H) 実施例4 MPTHAQ 29.49(0,1モル)を水酸化ナト
リウム289 (007モル)と水−エタノール(1:
 5)溶液240 mlとのアルカリ溶液に溶解し、該
溶液中V:、40°Cで十分な量の空気を2詩間導入し
た。生成した黄色の沈澱を沖過し、窒素気流中で乾燥し
生成物245りを得た。この生成物を実施例3と同様に
分析し、MPAQであることを確認した。
(1) Elemental analysis 020 H1802 calculated value 0
82.73%'116.25% Actual value 082.56
%H604%(2) Mass spectrum analysis Molar mass calculation value 290; Actual value 290(3)I
R analysis v (0=O) 16700m 1(
4) NMR (・cDa13) δ1.53 (s, 311), 1. .. 66 (s,
3H), 2.43 (t, 2 (support) 2.73 (d
te, 2H), 5.2 (t, IH), 75-80
(m, containing H), q- 8.0 to 8.4 (m, 3 H) Example 4 MPTHAQ 29.49 (0.1 mol) was mixed with sodium hydroxide 289 (0.07 mol) and water-ethanol (1 :
5) The solution was dissolved in an alkaline solution with 240 ml of solution, and a sufficient amount of air was introduced into the solution at 40°C for two periods. The produced yellow precipitate was filtered and dried in a nitrogen stream to obtain 245 ml of product. This product was analyzed in the same manner as in Example 3 and was confirmed to be MPAQ.

応用例 プ化処理 ソ連型N利チップ1.0009を回転式電熱モジュール
を用いて、下記の条件下でパルプ化した。
Application Example Pulp Processing Soviet type N-type chips 1.0009 were pulped using a rotary electric heating module under the following conditions.

液対木材比   35:1 チップに対して27%の水酸化ナトリウム水溶液、チッ
プに対してQ、 085%の2−(4−]〇− −ル −メチルー3−ペンT二、1)−アントラキノンを粉体
で添加。
Liquid to wood ratio 35:1 27% aqueous sodium hydroxide to chips, Q to chips, 085% 2-(4-]〇--ru-methyl-3-penT2,1)-anthraquinone Added in powder form.

スケジュール + 70 ”Cまで60分、170ユニ
吾I−キ≠−0Cて゛60分 次に蒸解チップを離解機で機械的に繊維離解した。
Schedule: 60 minutes to +70''C, 60 minutes to 170''C to -0C, then the cooked chips were mechanically disintegrated into fibers using a disintegrator.

収   率          47 %カツパーイ曲
        65 比較応用例 添加剤なしのバルブ化処理 ソ連型N拐チップ2,000’/を下記の条件下でパル
プ化した。
Yield: 47% Katsupai 65 Comparative Application Example Valved Soviet type N fiber chips without additives were pulped under the following conditions.

液封木材比     35:1 チップに対して30%の水酸化ナトリウム水溶液(MP
AQ無添加) スケジュール 170°C−4で60分、次いで170
°Cで60分 次に蒸解チップを離解機で機械的に繊維離解した。
Liquid sealing wood ratio 35:1 30% sodium hydroxide aqueous solution (MP
Schedule: 170°C-4 for 60 minutes, then 170°C
The cooked chips were then mechanically disintegrated using a disintegrator for 60 minutes at °C.

収   率          44 %カッパー価 
       70 11 − 336−
Yield 44% Kappa number
70 11-336-

Claims (3)

【特許請求の範囲】[Claims] (1)一般式 〔式中Hnはベンゼン環の二重結合か水素化された場合
における水素例加数を示し、nは0、2の整数を表わす
。〕で表わされるアントラキノン誘導体。
(1) General formula [In the formula, Hn represents a hydrogen addend when the double bond of the benzene ring is hydrogenated, and n represents an integer of 0 or 2. Anthraquinone derivative represented by ].
(2)  アントラキノン誘導体か2−(4−メチル−
3−ペンテニル)−1,4−ジヒドロアントラキノンで
ある特許請求の範囲第1項記載の化合物。
(2) Anthraquinone derivative or 2-(4-methyl-
The compound according to claim 1, which is 3-pentenyl)-1,4-dihydroanthraquinone.
(3)  アントラキノン誘導体が2−(4−メチル−
3−ペンテニル)−アントラキノンである特許請求の範
囲第1項記載の化合物。
(3) Anthraquinone derivative is 2-(4-methyl-
3-Pentenyl)-anthraquinone.
JP57061157A 1982-04-14 1982-04-14 Anthraquinone derivative Granted JPS58180452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57061157A JPS58180452A (en) 1982-04-14 1982-04-14 Anthraquinone derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57061157A JPS58180452A (en) 1982-04-14 1982-04-14 Anthraquinone derivative

Publications (2)

Publication Number Publication Date
JPS58180452A true JPS58180452A (en) 1983-10-21
JPH0161096B2 JPH0161096B2 (en) 1989-12-27

Family

ID=13163016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57061157A Granted JPS58180452A (en) 1982-04-14 1982-04-14 Anthraquinone derivative

Country Status (1)

Country Link
JP (1) JPS58180452A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921111A1 (en) * 1997-12-02 1999-06-09 Basf Aktiengesellschaft Process for the preparation of substituted anthraquinones
WO1999052819A1 (en) * 1998-04-11 1999-10-21 Degussa-Hüls Aktiengesellschaft Method for producing hydrogen peroxide and reaction carriers for carrying out the method
US6127580A (en) * 1995-09-06 2000-10-03 Basf Aktiengesellschaft Process for the preparation of substituted anthraquinones
EP1178032A1 (en) * 2000-08-04 2002-02-06 Degussa AG Process for the preparation of 2-(4-methyl-3-pentenyl)-anthraquinone

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6127580A (en) * 1995-09-06 2000-10-03 Basf Aktiengesellschaft Process for the preparation of substituted anthraquinones
EP0921111A1 (en) * 1997-12-02 1999-06-09 Basf Aktiengesellschaft Process for the preparation of substituted anthraquinones
WO1999052819A1 (en) * 1998-04-11 1999-10-21 Degussa-Hüls Aktiengesellschaft Method for producing hydrogen peroxide and reaction carriers for carrying out the method
US6355815B1 (en) 1998-04-11 2002-03-12 Degussa Ag Method of producing hydrogen peroxide and reaction promoters therefor
EP1178032A1 (en) * 2000-08-04 2002-02-06 Degussa AG Process for the preparation of 2-(4-methyl-3-pentenyl)-anthraquinone

Also Published As

Publication number Publication date
JPH0161096B2 (en) 1989-12-27

Similar Documents

Publication Publication Date Title
US2870206A (en) Preparation of benzophenone-azine
JPS58180452A (en) Anthraquinone derivative
US3828072A (en) Process for preparing compounds of the benzothioxanthene series
US4052415A (en) Manufacture of lactones of the triphenylmethane series
Truce et al. Organocopper chemistry. Coupling of (E)-2-iodo-1-alkenyl sulfones with monocopper (I) reagents
JPH02247151A (en) Cyclopentenone derivative and preparation thereof
JPS6391361A (en) Manufacture of t-alkyl-t-aralkylperoxide
US2982772A (en) Octahydro-5ah, 10ah, 4a, 9a-epoxydibenzo-p-dioxin-5a, 10a-diol
Clarke The Action of Hypochlorite on Sulfanilate
JPS5579360A (en) Preparation of n-methyl j-acid
JPH0319215B2 (en)
Adams et al. Quinone imides. XXXIII. Orientation of adducts from 2-benzenesulfonyl-p-quinonedibenzenesulfonimide
US2649484A (en) Trialkyl hydroxylamine-sulfur trioxide composunds
US2068197A (en) Production of beta-brazin-5, 11-dione
JPH0368019B2 (en)
US2545764A (en) Preparation of sulfanilylthiourea
US2247364A (en) Alkyl ethers of duro-hydroquinone and process for producing the same
US2228156A (en) Selenoazoijdones and process of
SU431163A1 (en) METHOD OF OBTAINING PyrILOCYANINES
SU1669912A1 (en) Method for preparation of substituted phenylhexeneacetates
Feuer et al. Preparation and Reactions of α, α'-Dibromo-α, α'-dinitrocyclic Ketones1
JPS59130832A (en) 4-halogeno-2-chloro-3-phenylcrotonaldehyde
JPS60139680A (en) Manufacture of 3h-phenothiazin-3-ones
JPS6383037A (en) Separation method for cyclohexanone
JPH0211585B2 (en)