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Carrie-Ann Harisson Ralf Leineweber Christopher J. Moody Jonathan M. J. Williams 《Tetrahedron letters》1993,34(52):8527-8530
Treatment of indole-2- or 3-methanols with tin(IV) chloride as Lewis acid in the presence of styrenes results informal [3+2]-addition of the indole stabilised cation to the alkene to give cyclopent[b]indoles with a high degree of stereoselectivity; use of methylcyclohexene as the alkene component gave the cis-fused cyclopent[b]indole 17, which was independently synthesised in enantiomerically pure form from the diketone 18. 相似文献
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