Synthesis of new optically active α-alkoxypropionanilides
作者:M.M. El-abadelah
DOI:10.1016/0040-4020(73)80014-6
日期:1973.1
Two promising routes towards synthesis of the hitherto unknown α-alkoxypropionanilides were explored with success. As expected, facile displacement of the bromide in l(−)α-bromopropionanilide by alkoxide lead to inversion of configuration with considerable racemization, whereas substitution of the chloride in l(−) α-alkoxypropionyl chloride by arylamine proceeded with little or no racemization. α-
Optically active carboxylic acid derivatives and liquid crystalline
申请人:Dainippon Ink and Chemicals, Inc.
公开号:US04911862A1
公开(公告)日:1990-03-27
An optically active carboxylic acid derivative represented by the general formula ##STR1## wherein R represents a normal alkyl group having 1 to 20 carbon atoms, m and n represent 0 or 1 but are not 1 at the same time, X represents a hydrogen or halogen atom, Y represents a hydrogen or fluorine atom, provided that when Y is a hydrogen atom, X is a halogen atom, and that when n is 0, Y is a hydrogen atom, and Q* represents an optically active alkyl or 1-alkoxyethyl group having an asymmetric carbon atom.
A new series of optically active compounds have been prepared using 4.4 ''-terphenyldicarboxylic acid and S-2-alcoxypropanols-1. These ace Sm*C, SmA and N* chemically stable - especially with regard to racemization and UV-light compounds with a snail P-S value, high twisting power and left handedness of helix.
Absolute configuration of pinacolyl alcohol
作者:John Jacobus、Zdenko Majerski、Kurt Mislow、Paul von Rague Schleyer
DOI:10.1021/ja01036a023
日期:1969.4
Kenyon; Phillips; Turley, Journal of the Chemical Society, 1925, vol. 127, p. 412