RING-OPENING SN2' REACTIONS OF 7-OXANORBORNENES BY ORGANOLITHIUM REAGENTS - REGIOSPECIFIC AND STEREOSPECIFIC SYNTHESIS OF SUBSTITUTED CYCLOHEXENEDIOLS

被引:16
作者
ARJONA, O [1 ]
DELAPRADILLA, RF [1 ]
MARTINDOMENECH, A [1 ]
PLUMET, J [1 ]
机构
[1] CSIC,INST QUIM ORGAN GEN,E-28006 MADRID,SPAIN
关键词
D O I
10.1016/S0040-4020(01)81475-7
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The nucleophilic Sn2' bridge opening of 7-oxabicyclo[2.2.1] hept-5-en-2-ols with organolithium reagents occurs in a regio- and stereospecific fashion to produce 6-substituted-cyclohex-4-en-1,3-diols, regardless of the stereochemistry at C-2. A free alcohol functionality is necessary to attain complete regiocontrol of the process. The methodology is utilized to prepare an optically pure cyclohexene derivative, (+)-(1S,3S,6R)-6-n-butyl-3-methyl-cyclohex-4-en-1,3-diol (5b), as a model system. © 1990.
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页码:8187 / 8198
页数:12
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