Abstract:
PROBLEM TO BE SOLVED: To provide a method of high efficiency and high enantioselectivity for manufacturing an optically active alcohol from a carbonyl compound, and to provide a ligand used therefor.SOLUTION: An optically active alcohol is obtained by reacting a carbonyl compound and an organozinc compound by using a phosphoroamide compound represented by a ligand (L) as a catalyst, where Ris a monovalent hydrocarbon group having 3 or more carbon atoms, Ris a different monovalent hydrocarbon group to R, Rand Rmay bond to each other to form a ring, R is an alkyl group, an aryl group or the like, Rto Rare each independently a monovalent hydrocarbon group, Rand R3, and Rand Rmay bond to each other to form a ring.
Abstract translation:要解决的问题:提供一种从羰基化合物制造光学活性醇的高效率和高对映选择性的方法,并提供用于其的配体。解决方案:通过羰基化合物和有机锌 通过使用由配体(L)表示的磷酰胺化合物作为催化剂,其中R是具有3个或更多个碳原子的一价烃基,R是与R相连的不同的一价烃基,Rand R may彼此结合形成环, R是烷基,芳基等,Rto Rare各自独立地是一价烃基,Rand R3和Rand Rmay彼此结合形成环。
Abstract:
An optically active quaternary ammonium salt compound represented by formula (1), wherein R 1 represents a halogen, a C 1-8 alkyl which is optionally substituted and which is linear, branched, or cyclic, a C 2-8 alkenyl which is optionally substituted, a C 2-8 alkynyl which is optionally substituted, a C 6-14 aryl which is optionally substituted, a C 3-8 heteroaryl which is optionally substituted, a C 1-8 alkoxy which is optionally substituted and which is linear, branched, or cyclic, or a C 7-16 aralkyl which is optionally substituted; R 2 and R 21 each independently represents hydrogen, halogen, nitro, a C 1-8 alkyl which is optionally substituted and which is linear, branched, or cyclic, a C 2-8 alkenyl which is optionally substituted, a C 2-8 alkynyl which is optionally substituted, a C 6-14 aryl which is optionally substituted, a C 1-8 alkoxy which is optionally substituted and which is linear, branched, or cyclic, or a C 7-16 aralkyl which is optionally substituted; one of combinations of R 1 and R 21 , and R 2 and R 21 , may bond to form a C 1-6 alkylene which is optionally substituted, a C 1-6 alkylenemonooxy which is optionally substituted, or a C 1-6 alkylenedioxy which is optionally substituted; R 3 and R 4 each independently represents hydrogen, a C 6-14 aryl which is optionally substituted, a C 3-8 heteroaryl which is optionally substituted, or a C 7-16 aralkyl which is optionally substituted, with a proviso that R 3 and R 4 are not hydrogen at the same time; R 5 represents hydrogen, halogen, a C 1-8 alkyl which is optionally substituted and which is linear, branched, or cyclic, a C 1-8 alkoxy which is optionally substituted and which is linear, branched, or cyclic, a C 2-8 alkenyl which is optionally substituted, or a C 2-8 alkynyl which is optionally substituted; R 6 represents halogen, a C 1-8 alkyl which is optionally substituted and which is linear, branched, or cyclic, a C 1-8 alkoxy which is optionally substituted and which is linear, branched, or cyclic, a C 2-8 alkenyl which is optionally substituted, or a C 2-8 alkynyl which is optionally substituted, and R 5 and R 6 may bond to form an aromatic ring which is optionally substituted; ring A and ring B do not have a same substituent at the same time; symbols * and ** represent an optical activity having an axial chirality; and X - represents an anion.
Abstract:
PROBLEM TO BE SOLVED: To provide an asymmetric hydrogenation method for ketone compounds, the method which is simple in operation, gives high selectivity and productivity, and has high atom economy and a bright prospect of industrial application.SOLUTION: The asymmetric hydrogenation method for ketone compounds includes a step of adding a ketone compound and an alkali into a second solvent to carry out the reaction of asymmetric hydrogenation of the ketone compound in a hydrogen atmosphere and in the presence of an in-situ catalyst obtained from a chiral ligand and a metal ruthenium salt. The in-situ catalyst is preferably obtained by reacting the chiral ligand with the metal ruthenium salt in a first solvent.
Abstract:
PROBLEM TO BE SOLVED: To provide an optically active quaternary ammonium salt compound useful as a chiral phase-transfer catalyst, and a production intermediate of the optically active quaternary ammonium salt compound.SOLUTION: The optically active quaternary ammonium salt compound is represented by formula (1). In the formula: Ris an alkyl or alkoxy; Rand Rare hydrogen; Ris hydrogen, alkyl or alkoxy; Ris aryl or aralkyl; Rand Rare alkenyl and connects together to form an aromatic ring; * and ** show optical activity having shaft asymmetry; and Xshows an anion.
Abstract translation:要解决的问题:提供可用作手性相转移催化剂的光学活性季铵盐化合物和光学活性季铵盐化合物的制备中间体。 解决方案:光学活性季铵盐化合物由式(1)表示。 在式中:R 1 SP>是烷基或烷氧基; R 2 SP>和R 4 SP>是氢; R 21是氢,烷基或烷氧基; R 3是芳基或芳烷基; R 5 SP>和R 6 SP>是烯基并连接在一起形成芳环; *和**表示具有轴不对称性的光学活动; 而X - SP>显示阴离子。 版权所有(C)2012,JPO&INPIT