REDUCTIVE CYCLIZATION OF ESTER-CONTAINING ENYNES WITH A PRACTICAL TITANOCENE REAGENT - SYNTHESIS OF BICYCLIC CYCLOPENTENONES AND IMINOCYCLOPENTENES

被引:86
作者
GROSSMAN, RB [1 ]
BUCHWALD, SL [1 ]
机构
[1] MIT,DEPT CHEM,CAMBRIDGE,MA 02139
关键词
D O I
10.1021/jo00048a001
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The combination of Cp2TiCl2 with 2 equiv of EtMgBr provides an effective reagent for the reductive cyclization of enynes, including ester-containing enynes, to bicyclic titanacyclopentenes. These metallacycles may then be transformed into bicyclic cyclopentenones or iminocyclopentenes in good yields by reaction with CO or an isocyanide, respectively.
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页码:5803 / 5805
页数:3
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