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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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