Enantioselective methylation of the lithium enolate of 1-tetralone mediated by chiral C-2-symmetric DMEU derivatives

被引:8
作者
Ishii, K [1 ]
Aoki, S [1 ]
Koga, K [1 ]
机构
[1] UNIV TOKYO,FAC PHARMACEUT SCI,BUNKYO KU,TOKYO 113,JAPAN
关键词
D O I
10.1016/S0040-4039(96)02372-6
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Chiral C-2-symmetric DMEU derivatives were designed and synthesized as chiral ligands for lithium. The reaction of the lithium enolate (2) of 1-tetralone (1) with methyl iodide in toluene in the presence of a DMEU derivative (11) and hexamethyldisilazane gave (S)-2-methyl-1-tetralone ((S)-3) in up to 92% ee. (C) 1997, Elsevier Science Ltd. All rights reserved.
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页码:563 / 566
页数:4
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