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    • 93. 发明授权
    • Cyclic alcohol and process for producing the same
    • 循环酒精和生产过程
    • US5767328A
    • 1998-06-16
    • US770051
    • 1996-12-19
    • Shigeru OnoMineyuki Iwasaki
    • Shigeru OnoMineyuki Iwasaki
    • B01J29/08B01J29/18B01J29/40B01J29/50B01J29/60C07B61/00C07C29/04C07C29/76C07C29/80C07C35/08C07C29/20
    • C07C29/04C07C2101/14
    • A process for producing a cyclic alcohol which comprises subjecting a cyclic olefin represented by the formula: C.sub.n H.sub.2n-2-m R.sub.m (wherein R represents a hydrogen atom, an alkyl group of 1-4 carbon atoms, a phenyl group or a cyclohexyl group, n represents an integer of 5-12, and m represents an integer of 1-4) to a catalytic hydration reaction with water in the presence of a crystalline aluminosilicate having a primary particle diameter of 0.5 .mu.m or less as a catalyst, extracting the resulting liquid of an oil phase containing a cyclic alcohol and the crystalline aluminosilicate, evaporating the liquid and feeding the vapor to a rectifying column and/or filtering the liquid and feeding the filtrate to the rectifying column, thereby to adjust the concentration of the crystalline aluminosilicate contained in the liquid in the rectifying column to 1000 ppm by weight or less, and subjecting the liquid to distillation to separate the cyclic alcohol.
    • 一种制备环状醇的方法,该方法包括使式C n H 2n-2-m R m(其中R表示氢原子,1-4个碳原子的烷基,苯基或环己基,n 表示在一次粒径为0.5μm以下的结晶性硅铝酸盐作为催化剂进行与水的催化水合反应的5〜12的整数,m表示1-4的整数),萃取所得 含有环状醇的油相的液体和结晶硅铝酸盐,蒸发液体并将蒸气送入精馏塔和/或过滤液体,并将滤液送入精馏塔,从而调节所含的结晶铝硅酸盐的浓度 在精馏塔中的液体至1000重量ppm以下,并使液体蒸馏分离出环状醇。
    • 100. 发明授权
    • Cycloalkyl-based chiral auxiliaries and method making the same
    • 环烷基型手性助剂及其制备方法
    • US5262571A
    • 1993-11-16
    • US855721
    • 1992-03-20
    • Daniel L. CominsJames M. Salvador
    • Daniel L. CominsJames M. Salvador
    • C07C29/40C07C35/08C12P7/62C12P41/00C07C29/159
    • C12P41/004C07C29/40C07C35/08C12P7/62C07B2200/09C07C2101/14
    • A process of synthesizing enantiomerically pure compounds defined by Formula V, ##STR1## which are useful as chiral auxiliaries is disclosed. The process comprises, first, combining a base of Formula Y.sup.- Z.sup.+ (Formula I), wherein Y.sup.- is an organic anion and Z.sup.+ is an inorganic cation, with a compound of Formula II, ##STR2## wherein R.sub.1 is a C.sub.1 -C.sub.4 alkyl group and R.sub.2 is the same as R.sub.1, or wherein R.sub.1 and R.sub.2 together form cyclopentane or cyclohexane, and wherein R.sub.3 is a substituted or unsubstituted aryl group, to form a compound defined by Formula III, ##STR3## then: (b) reacting the compound of Formula III with a cyclic epoxide defined by Formula IV, ##STR4## wherein n is 1, 2, or 3, to form a racemic mixture of a compound defined by Formula V. ##STR5## In a preferred embodiment, the method further comprises stereospecifically esterifying one of the enantiomers of the racemic mixture of compound (V) and a carboxylic acid with an enzyme in an organic solvent, wherein said acid is a C.sub.2 -C.sub.20 alkyl acid, benzoic acid or a C.sub.2 -C.sub.14 alkyl benzoic acid, and then separating the esterified enantiomer from the non-esterified enantiomer.
    • 公开了可用作手性助剂的由式V,(VI)定义的对映体纯的化合物的合成方法。 该方法包括首先将式Y-Z +(式I)的碱,其中Y-是有机阴离子,Z +是无机阳离子,与式II化合物,其中R1是 C1-C4烷基,R2与R1相同,或者其中R1和R2一起形成环戊烷或环己烷,其中R3是取代或未取代的芳基,形成由式III定义的化合物, 然后:(b)使式III的化合物与式IV定义的环状环氧化物反应,其中n为1,2或3,以形成由式V定义的化合物的外消旋混合物。 (V)在优选的实施方案中,该方法还包括将有机溶剂中的化合物(V)和羧酸的外消旋混合物的对映异构体立体异构酯化为酶,其中所述酸是C 2 -C 20烷基 酸,苯甲酸或C 2 -C 14烷基苯甲酸,然后将酯化的对映异构体与未酯化的对映体 omer。