ENANTIOSELECTIVE CONJUGATE ADDITION TO CYCLIC ENONES WITH SCALEMIC LITHIUM ORGANO(AMIDO)CUPRATES .4. RELATIONSHIP BETWEEN LIGAND STRUCTURE AND ENANTIOSELECTIVITY

被引:78
作者
ROSSITER, BE
EGUCHI, M
MIAO, G
SWINGLE, NM
HERNANDEZ, AE
VICKERS, D
FLUCKIGER, E
PATTERSON, RG
REDDY, KV
机构
[1] Department of Chemistry, Brigham Young University, Provo
关键词
D O I
10.1016/S0040-4020(01)86278-5
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Scalemic lithium amides derived from primary and secondary amines react with organocopper compounds in ether or dimethyl sulfide to form lithium organo(amido)cuprates capable of enantioselective conjugate addition to 2-cycloalkenones. The most successful heterocuprate, in which the chiral ligand is (S)-N-methyl-1-phenyl-2-(1-piperidinyl)ethanamine, (S)-MAPP, 13, reacts with cyclic enones to form products with up to 97% ee. Non-linear asymmetric induction was observed with the cuprate formed from ligand 13.
引用
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页码:965 / 986
页数:22
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