An efficient synthesis of hydropyrido[1,2-a]indole-6(7H)-ones via an In(iii)-catalyzed tandem cyclopropane ring-opening/Friedel–Crafts alkylation sequence
Diastereoselective Intramolecular Friedel–Crafts Cyclizations of Substituted Methyl 2-(1<i>H</i>-indole-1-carbonyl)acrylates: Efficient Access to Functionalized 1<i>H</i>-Pyrrolo[1,2-<i>a</i>]indoles
作者:Dadasaheb V. Patil、Marchello A. Cavitt、Stefan France
DOI:10.1021/ol202431x
日期:2011.11.4
A general, catalytic method for the diastereoselective synthesis of functionalized 1H-pyrrolo[1,2-a]indoles via an intramolecular Friedel-Crafts alkylation of N-acyl indoles Is reported. Products were obtained In excellent yields (up to 98%) with high diastereoselectivities (up to >25:1 dr).
An efficient synthesis of hydropyrido[1,2-a]indole-6(7H)-ones via an In(iii)-catalyzed tandem cyclopropane ring-opening/Friedel–Crafts alkylation sequence
作者:Dadasaheb V. Patil、Marchello A. Cavitt、Paul Grzybowski、Stefan France
DOI:10.1039/c1cc14131g
日期:——
An efficient Lewis acid-catalyzed cyclopropane ring-opening/FriedelâCrafts alkylation sequence of methyl 1-(1H-indole-carbonyl)-1-cyclopropanecarboxylates is reported. The protocol affords functionalized hydropyrido[1,2-a]indole-6(7H)-ones in up to 99% yield.
N-Hydroxy indoles as flexible substrates in rearrangements—a novel reaction with activated triple bonds
作者:Mariana P. Duarte、Ricardo F. Mendonça、Sundaresan Prabhakar、Ana M. Lobo
DOI:10.1016/j.tetlet.2005.12.021
日期:2006.2
A novelrearrangement of N-hydroxy indole derivatives obtained from addition of N-hydroxy indoles to the activated triple bonds of alkynes was found to coexist with 3,3-sigmatropic rearrangements to the indolic ring. A mechanism involving an intermediate oxaziridinium ring rationalizes the transformation.