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1. 发明专利

JPS63277242A NOVEL SULFUR-CONTAINING POLYMER AND PRODUCTION THEREOF 失效
公开(公告)号：JPS63277242A
公开(公告)日：1988-11-15
申请号：JP11329687
申请日：1987-05-08
申请人： SEITETSU KAGAKU CO LTD , KOBAYASHI HIDEKAZU
发明人： KOBAYASHI HIDEKAZU , MARUYAMA SATOSHI , KAWAMURA MASAO , KATO KUNIOKI , TAKAHASHI MASAHIDE , YAGI TAKASHI
IPC分类号： C08G75/02
摘要： PURPOSE:To obtain the titled polymer, having a high refractive index, excellent heat resistance, flame retardance, etc., and useful as a material for organic glass, etc., by reacting divinylbenzene with pyridinedithiol in a polar solvent while irradiating the resultant reaction mixture with ultraviolet rays. CONSTITUTION:Divinylbenzene (preferably p-divinylbenzene) is reacted with pyridinedithiol (preferably 2,6-pyridinedithiol) in the presence of a radical polymerization initiator (preferably benzoyl peroxide or 2,2'-azobisisobutyronitrile) in a polar solvent (preferably DMF, N-methyl-2-pyrrolidone or 1,2- dimethoxyethane) while being irradiated with ultraviolet rays to afford the aimed polymer having repeating units expressed by the formula.

2. 发明专利

JPS63185955A PRODUCTION OF 4-METHYL-1,2-BENZENEDITHIOL 失效
公开(公告)号：JPS63185955A
公开(公告)日：1988-08-01
申请号：JP1436787
申请日：1987-01-24
申请人： SEITETSU KAGAKU CO LTD
发明人： SUZUKI MICHIO , KAWAMURA MASAO , KATO KUNIOKI , TAKAHASHI MASAHIDE , NAKAYAMA KAZUYUKI
IPC分类号： C07C319/24 , B01J27/06 , B01J27/10 , C07B61/00 , C07C67/00 , C07C313/00 , C07C319/02 , C07C319/06 , C07C321/10 , C07C321/26
摘要： PURPOSE:To obtain a compound useful as an intermediate for near infrared absorbing coloring matter which is an optical information recording medium in good yield in simple steps, by reacting 4-methylbenzenethiol or an oxide thereof with sulfur monochloride and reducing the resultant reaction product with a metal. CONSTITUTION:4-Methylbenzenethiol or di(4-methylphenyl) disulfide is reacted with sulfur monochloride in the presence of iodine or a Lewis acid catalyst in a halogenated hydrocarbon solvent, e.g. chloroform, at room temperature-140 deg.C. The reaction mixture is then subjected to reductive reaction at 40-80 deg.C for 0.5-3hr using at least one metal selected from zinc, tin and iron under acid condition to afford the aimed substance. The reaction is carried out by using sulfur monochloride in a molar amount of 0.5-2.0 times based on the 4-methylbenzenethiol and the di(4-methylphenyl) disulfide in a molar amount of 1-4 times based on the 4-methylbenzenethiol.

3. 发明专利

JPS59106479A Production of ketopantolactone 失效
标题翻译：生产酮二醇
公开(公告)号：JPS59106479A
公开(公告)日：1984-06-20
申请号：JP21583082
申请日：1982-12-09
申请人： Seitetsu Kagaku Co Ltd
发明人： KAWAMURA MASAO , AKUTSU SEIICHI , TAKAHASHI MASAHIDE , OONISHI JIICHI
IPC分类号： C07D307/60
摘要： PURPOSE: Pantolactone is oxidized with chlorine in an organic solvent in the presence of bromine and water to produce the titled compound which is used as an intermediate of D-(-)-pantolactone used as a starting compound for pantethine in higy yield with reduction in by-product formation.
CONSTITUTION: Pantolactone is combined with 0.98W0.1mole of chlorine, 0.02W 0.9mole of bromine and 10W100% of water based on the pantolactone and they are refluxed, preferably in the presence of an organic solvent such as carbon tetrachloride, at the boiling point of the solvent to give the objective ketopantolactone. The use of a mixed system of Br
2 and Cl
2 can oxidize HBr formed as a by-product by bromine oxidation with chlorine to effect the reaction of 2HBr+Cl
2 →2HCl+Br
2 and the resultant Br
2 is used again as the oxidizing agent.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：在溴和水的存在下，用有机溶剂中的氯氧化内消旋酮，产生标题化合物，该化合物用作作为泛酸盐的起始化合物的D - （ - ） - 泛酸内酯的中间体，以高产率还原副产品形成。构成：根据泛酸内酯，将泛酸内酯与0.98-0.1摩尔氯，0.02-0.9摩尔溴和10-100％水混合，并优选在有机溶剂如四氯化碳的存在下回流溶剂的沸点得到目标酮戊酸内酯。使用Br2和Cl2的混合体系可以通过用溴氧化作为副产物氧化形成的HBr，以进行2HBr + Cl 2 2HCl + Br 2的反应，再次使用所得的Br 2作为氧化剂。

4. 发明专利

JPS5439019A PREPARATION OF 22BROMOO33METHYLBUTYRYL UREA 失效
公开(公告)号：JPS5439019A
公开(公告)日：1979-03-24
申请号：JP10300177
申请日：1977-08-26
申请人： SEITETSU KAGAKU CO LTD
发明人： KAWAMURA MASAO , AKUTSU SEIICHI , TAKAHASHI MASAHIDE , KITAGISHI NOBUYUKI , YONEZAWA TAIZOU , OOTANI SHIGEKI
IPC分类号： C07C275/50
摘要： PURPOSE:To prepare titled compound in high yield by reaction of 2-bromo-3-methylbutyryl halides with urea in a specific organic solvent, followed by removal of water in urea and the solvent as an azeotropic mixture.

5. 发明专利

JPS5346962A PREPARATION OF THIOPHENEACETIC ACIDS 失效
公开(公告)号：JPS5346962A
公开(公告)日：1978-04-27
申请号：JP12058476
申请日：1976-10-06
申请人： SEITETSU KAGAKU CO LTD
发明人： KAWAMURA MASAO , TSUCHIYA HIROO , TAKAGI SHIYUUJI , TAKAHASHI MASAHIDE , SOMETA HITOSHI
IPC分类号： C07D333/24 , C07D333/06
摘要： PURPOSE:To prepare thiopheneacetic acids easily, useful as chemical modifier for synthetic antibiotics and raw materials for pharmaceuticals, by the photochemical reaction of thiophene with monohaloacetic acid or its ester under ultraviolet irradiation.

6. 发明专利

JPS6433138A PRODUCTION OF POLYPHENYLENE SULFIDE 失效
公开(公告)号：JPS6433138A
公开(公告)日：1989-02-03
申请号：JP19135287
申请日：1987-07-29
申请人： SEITETSU KAGAKU CO LTD
发明人： TAKAHASHI MASAHIDE , KAWAMURA MASAO , KATO KUNIOKI
IPC分类号： C08G75/02 , C08G75/04
摘要： PURPOSE:To obtain a high-MW polymer in high yields, by polymerizing 4,4'- dimercaptodiphenyl sulfide with a 4,4'-dihalodiphenyl sulfide in a solvent in the presence of an alkali (bi) carbonate. CONSTITUTION:A polyphenylene sulfide of the formula is obtained by polymerizing 4,4'-dimercaptodiphenyl sulfide with a 4,4'-dihalodiphenyl sulfide by keeping them at 200-400 deg.C in a solvent in the presence of an alkali carbonate or an alkali bicarbonate. Examples of said 4,4'-dihalodiphenyl sulfides used include 4,4'-dichlorodiphenyl sulfide and 4,4'-dibromodiphenyl sulfide. Good results can be usually brought about when the molar ratio between the materials is such that 4,4'-dimercaptodiphenyl sulfide is used in an amount which is slightly excess over an equimolar amount and is in the range of 1.00-1.2mol.

7. 发明专利

JPS6312467B2 失效
公开(公告)号：JPS6312467B2
公开(公告)日：1988-03-18
申请号：JP3713481
申请日：1981-03-13
申请人： SEITETSU KAGAKU CO LTD
发明人： KAWAMURA MASAO , TAKEMOTO MASAYOSHI , MAEDA HARUICHIRO , AKUTSU SEIICHI , KONO YUKIO , TAKAHASHI MASAHIDE , KONISHI HIROTSUGU
IPC分类号： C07C275/54 , C07C67/00 , C07C239/00

8. 发明专利

JPS61246177A 5-ACETYL-2-6THIENYLACETONITRILE AND PRODUCTION THEREOF 失效
公开(公告)号：JPS61246177A
公开(公告)日：1986-11-01
申请号：JP8669285
申请日：1985-04-22
申请人： SEITETSU KAGAKU CO LTD
发明人： TAKAHASHI MASAHIDE , KAWAMURA MASAO , KATO KUNIOKI
IPC分类号： C07D333/24 , B01J27/10 , C07B61/00
摘要： NEW MATERIAL:5-Acetyl-2-thienylacetonitrile. USE:Useful as a raw material for synthesizing 5-acetylthiphene-2-carboxylic acid, an intermediate for synthesizing a compound useful as a drug for arrhytymia, various heart diseases and hypertension. PREPARATION:2-Thienlacetonitrile as a raw material is reacted with an acetylating agent such as acetyl chloride, acetic anhydride, etc. in the presence of Friedel-Crafts catalyst to give a compound shown by the formula. AgCl3, FeCl3, SnCl4, ZnCl2, etc., may by cited as the Friedel-Crafts catalyst and the amount of it added is preferably 14n3 times the molar amount of the acetylating agent. The temperature when the catalyst is added is properly 10-80 deg.C and preferably 40-60 deg.C to make the reaction smooth. Dichloromethane, chloroform, etc., are used as solvent.

9. 发明专利

JPS59164749A Preparation of alpha-keto acid and/or its salt 失效
标题翻译：阿尔卡特酸和/或其盐的制备
公开(公告)号：JPS59164749A
公开(公告)日：1984-09-17
申请号：JP3970183
申请日：1983-03-09
申请人： Seitetsu Kagaku Co Ltd
发明人： KAWAMURA MASAO , AKUTSU SEIICHI , TAKAHASHI MASAHIDE , HATA HIROYUKI , MORISHITA TSUYOSHI , NISHIMORI HIROKUNI
IPC分类号： C07C59/185 , C07C51/00 , C07C51/09 , C07C51/373 , C07C59/205 , C07C59/21 , C07C59/76 , C07C67/00
摘要： PURPOSE: To prepare the titled compound useful industrially as pharmaceuticals, etc., economically, in high yield, by reacting an aldehyde with an oxalic acid ester in the presence of a metal alcoholate, and hydrolyzing the product with an alkali.
CONSTITUTION: The objective compound of formula II is prepared by reacting the aldehyde of formula I (R
1 and R
2 are 1W18C alkyl, halogen-substituted alkyl, 3W8C cycloalkyl, or aromatic hydrocarbon group) with an oxalic acid ester of formula (COOR
3 )
2 (R
3 is 1W5C alkyl) in the presence of a metal alcoholate of formula ROM (R is 1W18C alkyl; M is alkali metal or alkaline earth metal), preferably in a solvent such as methyl alcohol, dioxane, etc. at -70W +50°C, preferably at 8W12°C, hydrolyzing the reaction mixture with an alkali such as sodium hydroxide, and treating the product with a mineral acid. The molar ratio of the compound of formula I to the oxalic acid ester preferably 1.0W1.2.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：在金属醇化物的存在下，通过使醛与草酸酯反应，并以碱的方式使产物水解，从经济上高效率地制备作为药物等在工业上有用的标题化合物。结构式：式II的目的化合物是通过使式I的醛（R1和R2是1-18C烷基，卤素取代的烷基，3-8C环烷基或芳族烃基）与式（III）的草酸酯反应制备的， COOR3）2（R3为1-5C烷基）在式ROM的金属醇化物（R为1-18C烷基; M为碱金属或碱土金属）的存在下，优选在溶剂如甲醇，二恶烷，在-70- + 50℃，优选在8-12℃，用碱如氢氧化钠水解反应混合物，并用无机酸处理该产物。式I化合物与草酸酯的摩尔比优选为1.0-1.2。

10. 发明专利

JPS58154561A PREPARATION OF 2-HYDROXYHALOGENOPYRIDINE 失效
公开(公告)号：JPS58154561A
公开(公告)日：1983-09-14
申请号：JP3781782
申请日：1982-03-09
申请人： SEITETSU KAGAKU CO LTD
发明人： KAWAMURA MASAO , AKUTSU SEIICHI , TAKAHASHI MASAHIDE , HAMAYA KAZUHIRO
IPC分类号： C07D213/64 , B01J31/02 , B01J31/06 , C07B61/00
摘要： PURPOSE:To prepare selectively a 2-hydroxyhalogenopyridine useful as a raw material for agricultural chemicals, etc., by hydrolyzing a halogenopyridine with an alkali aqueous solution using a phase transfer catalyst such as a quaternary ammonium salt, quaternary phosphonium salt, etc. as a catalyst. CONSTITUTION:A halogenopyridine (e.g., 2,3-dichloropyridine, etc.) shown by the formulaI(X is halogen; n is 2-4) is hydrolyzed with an alkali aqueous solution (e.g., >=50wt% NaOH aqueous solution, etc.), to give a 2-hydroxyhalogenopyridine shown by the formula II. In the reaction, a phase transfer catalyst such as benzyltriethylammonium chloride, tetraphenylphosphonium chloride, 18- crown-6, etc. or a nitrogen-containing heterocylic compound such as pyridine, etc. is used as a catalyst.

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