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DIASTEREOSELECTIVE HETEROATOM-DIRECTED CONJUGATE ADDITION OF SILYLCUPRATE REAGENTS TO UNSATURATED CARBONYLS - A STEREOSELECTIVE ROUTE TO BETA-CARBONYL SILOXANES
被引:26
作者:
HALE, MR
[1
]
HOVEYDA, AH
[1
]
机构:
[1] BOSTON COLL,MERKERT CHEM CTR,DEPT CHEM,CHESTNUT HILL,MA 02167
关键词:
D O I:
10.1021/jo00095a007
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Directed conjugate addition of the silylcuprate reagent lithium bis[diphenyl(diethylamino)silyl]-cuprate ((Ph(2)(Et(2)N)Si)(2)CuLi) to unsaturated esters and ketones is reported. The stereochemical course of the reaction can be-controlled by the presence of an appropriately disposed internal Lewis basic functionality, affording the corresponding beta-hydroxysilyl carbonyls with good to excellent levels of diastereoselection (e.g., 3b --> 4b).
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页码:4370 / 4374
页数:5
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