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    Method for producing optically active 2-methylepihalohydrin or the like
    2.
    发明专利
    Method for producing optically active 2-methylepihalohydrin or the like 审中-公开
    用于生产光学活性的2-甲基吗啉乙醇或类似物的方法

    公开(公告)号：JP2007291010A

    公开(公告)日：2007-11-08

    申请号：JP2006120352

    申请日：2006-04-25

    申请人： Daiso Co Ltd ,  ダイソー株式会社

    发明人： YAEGASHI KEISUKE ,  FUKUMOTO DAISUKE ,  MIKAMI MASAFUMI

    IPC分类号： C07D301/02 ,  C07B53/00 ,  C07C67/22 ,  C07C69/675 ,  C07C253/16 ,  C07C255/12 ,  C07D303/08

    摘要： PROBLEM TO BE SOLVED: To provide an efficient method for producing a 2-methylepihalohydrin or the like useful as an intermediate of a medicine or an agrochemical. SOLUTION: The 2-methylepihalohydrin is produced by sulfonylating a primary hydroxy group of a 3-halogeno-2-methyl-1,2-propanediol to afford 3-halogeno-2-methyl-1-sulfonyloxy-2-propanol (3), and treating the 3-halogeno-2-methyl-1-sulfonyloxy-2-propanol with a base. COPYRIGHT: (C)2008,JPO&INPIT

    摘要翻译： 待解决的问题：提供用作药物或农药的中间体的2-甲基表卤代醇等的有效方法。 解决方案：2-甲基表卤代醇通过磺酰化3-卤代-2-甲基-1,2-丙二醇的伯羟基而得到3-卤代-2-甲基-1-磺酰氧基-2-丙醇（ 3），并用碱处理3-卤代-2-甲基-1-磺酰氧基-2-丙醇。 版权所有（C）2008，JPO＆INPIT

    COLOR STABLE SOLUTION OF DIMETHYLAMINO-ACETONITRILE IN WATER AND METHOD FOR PREPARING THE SAME
    6.
    发明专利
    COLOR STABLE SOLUTION OF DIMETHYLAMINO-ACETONITRILE IN WATER AND METHOD FOR PREPARING THE SAME 失效

    公开(公告)号：JP2001294566A

    公开(公告)日：2001-10-23

    申请号：JP2001056758

    申请日：2001-03-01

    申请人： CLARIANT GMBH

    发明人： FELL RAINER ,  WILBERT GOETZ ,  STAEHRFELDT THOMAS DR

    IPC分类号： C07C253/16 ,  C07C253/00 ,  C07C253/32 ,  C07C255/24 ,  C07C255/25

    摘要： PROBLEM TO BE SOLVED: To provide an inexpensive method by which very pure dimethylaminoacetonitrile(DMAA) solution is obtained directly in storage-stable form. SOLUTION: The present invention relates to a method for preparing color stable aqueous solution of dimethylaminoacetonitrile from formaldehyde source, dimethylamine and hydrocyanic acid. In the method, reaction mixture contains 2,4-diamino-6-phenyl-1,3,5-triazine (benzoguanamine) in a concentration of 0.001-5 wt.% based on formaldehyde and the starting materials are used stoichiometrically or in a ratio of 0.98-1.02 mol of formaldehyde and 0.90-1.10 mol of dimethylamine per mol of hydrocyanic acid. The resulting product remains color-stability without a further purification step even after prolonged storage.

    PREPARATION OF 2-HYDROXY-3,3,3-TRIFLUOROPROPIONITRILE
    8.
    发明专利
    PREPARATION OF 2-HYDROXY-3,3,3-TRIFLUOROPROPIONITRILE 失效

    公开(公告)号：JPH03148249A

    公开(公告)日：1991-06-25

    申请号：JP28661889

    申请日：1989-11-02

    申请人： TOA GOSEI CHEM IND

    发明人： KUBOTA TOSHIO ,  TANAKA TATSUO ,  IIJIMA MASAHIRO ,  IIJIMA NORIHISA

    IPC分类号： B01J27/125 ,  B01J27/138 ,  C07B61/00 ,  C07C253/16 ,  C07C255/12

    摘要： PURPOSE:To prepare the subject compound in a high yield in a safe and easy operation in one stage reaction by reacting trifluoroacetoaldehyde- alkylhemiacetal as a starting raw material with a trialkylsilylcyanide in the presence of a Lewis acid in an organic solvent. CONSTITUTION:A trifluoroacetoaldehyde-alkylhemiacetal of the formula (R is 1-4C alkyl) is reacted with a trialkylsilylcyanide in the presence of a Lewis acid in an organic solvent to prepare 2-hydroxy-3,3,3-trifluoropropionitrile. The method provides the objective compound in a high yield in easy handling operations safely and profitably. The produced compound is useful as an intermediate, etc., for optically active trifluorolactic acid. activity.

    PRODUCTION OF OPTICALLY ACTIVE TERTIARY ALLYL ALCOHOL
    9.
    发明专利
    PRODUCTION OF OPTICALLY ACTIVE TERTIARY ALLYL ALCOHOL 失效

    公开(公告)号：JPH03106841A

    公开(公告)日：1991-05-07

    申请号：JP24595789

    申请日：1989-09-20

    申请人： NISSAN CHEMICAL IND LTD ,  SATO FUMIE

    发明人： SATOU FUMIE ,  ARAI KAZUTAKA ,  MIYAJI KATSUAKI

    IPC分类号： C07C405/00 ,  C07B53/00 ,  C07C29/00 ,  C07C33/03 ,  C07C33/30 ,  C07C33/42 ,  C07C253/16 ,  C07C255/12 ,  C07C319/14 ,  C07C323/14 ,  C07F7/22

    摘要： PURPOSE:To efficiently obtain the subject substance useful as an intermediate of medicinal and agricultural drug in a low cost without using an expensive resolving agent and predicting stereostructure by reacting an optically active alcohol having silyl group at gamma-position and a specific nucleophilic reagent. CONSTITUTION:A compound expressed by formula I or formula II (R to R are 1-10C alkyl; R and R are substitutable 1-10C alkyl or phenyl) is reacted with a compound expressed by formula III (R is H, phenyl, phenylthio, alkyl, alkenyl, alkynyl, alkylthio, alkylamino or CN, etc.; M is Li, Na, K, Mg, Ti, Zr, Ni, Cu, Al or Sn, etc., or group containing said metals) in a solvent such as THF and in inert atmosphere at -78 deg.C to 48 deg.C for 0.5-5hr to afford a compound expressed by formula IV or formula V. The compound expressed by formula I or formula II is new substance and obtained from epoxyketone compound having silyl group at gamma-position and organic Mg.