Enantioselective copper-catalyzed allylic alkylation with dialkylzincs using phosphoramidite ligands

被引：100

作者：

Malda, H ^{[1
]}

van Zijl, AW ^{[1
]}

Arnold, LA ^{[1
]}

Feringa, BL ^{[1
]}

机构：

[1] Univ Groningen, Stratingh Inst, Dept Organ & Mol Inorgan Chem, NL-9747 AG Groningen, Netherlands

来源：

ORGANIC LETTERS | 2001年 / 3卷 / 08期

关键词：

D O I：

10.1021/ol0156289

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

[GRAPHICS] In the presence of a catalytic amount of copper salts, cinnamyl halides undergo a regio- and enantioselective S(N)2' alkylation with dialkylzincs using chiral phosphoramidites as ligands. An S(N)2':S(N)2 ratio of 85:15 and enantiomeric excesses up to 77% for the chiral S(N)2' products are found, Variation of solvent and reaction temperature revealed that the highest regio- and enantioselectivities are found using coordinating solvents of -40 degreesC.

引用

页码：1169 / 1171

页数：3

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