Preparation of chiral 1-phenylethanols and bromides
作者:
Allan R. Stein,
Robert D. Dawe,
James R. Sweet,
期刊:
Canadian Journal of Chemistry
(NRC Available online 1985)
卷期:
Volume 63,
issue 12
页码: 3442-3448
ISSN:0008-4042
年代: 1985
DOI:10.1139/v85-565
出版商: NRC Research Press
数据来源: NRC
摘要:
A fast, convenient procedure for preparing and resolving moderate to large quantities of chiral secondary alcohols is described. The general procedure involves a one-pot conversion of the ketone (various acetophenones) to the half-ester of a diacid (succinic, phthalic… ) and resolution with (+)- and (−)-1-phenylethylamines. Overall yields of the enantiomeric alcohols, the variously substituted 1-phenylethanols, are generally 65–85% with optical purities of approximately 90%. Properties and optical rotations of a number of chiral 1-phenylethanols and of the bromides made from them are tabulated. A discussion of optical purity determinations using nmr methods is included and absolute configurations are reported.
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