Rhodium-catalyzed cycloisomerization: Formation of indoles, benzofurans, and enol lactones

被引:174
|
作者
Trost, Barry M. [1 ]
McClory, Andrew [1 ]
机构
[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA
关键词
alkynes; atom economy; cyclization; homogeneous catalysis; rhodium; BIS-HOMOPROPARGYLIC ALCOHOLS; METAL VINYLIDENE CARBENES; 2-ETHYNYLANILINE DERIVATIVES; RECONSTITUTIVE CONDENSATION; 2-SUBSTITUTED INDOLES; TERMINAL ALKYNES; ATOM ECONOMY; ALLYL ALCOHOLS; CYCLIZATION; 2-ALKYNYLANILINES;
D O I
10.1002/anie.200604183
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
(Chemical Equation Presented) Internal affairs: Indoles, benzofurans, and enol lactones are formed chemoselectively from the rhodium-catalyzed cyclo-isomerization reaction of easily prepared alkynyl aniline substrates (see scheme, cod = cycloocta-1,5-diene, DMF = N,N-dimethylformamide). The reaction may proceed by nucleophilic capture of a vinylidene intermediate. Indoles are formed under mild conditions using low catalyst loadings. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:2074 / 2077
页数:4
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