Nucleophilic <i>ortho</i>-Allylation of Pyrroles and Pyrazoles: An Accelerated Pummerer/Thio-Claisen Rearrangement Sequence
作者:Andrew J. Eberhart、Claudio Cicoira、David J. Procter
DOI:10.1021/ol401786d
日期:2013.8.2
Arylsulfinyl groups direct the metal-free, regiospecific, nucleophilic ortho-allylation of pyrroles and pyrazoles. Mechanistic studies support the intermediacy of allylsulfonium salts that undergo facile thio-Claisen rearrangement onto the heterocyclic ring, giving products of coupling. The strategy has been adapted to allow regiospecific propargylation of the heterocyclic substrates.
CARMONA O.; GREENHOUSE R.; LANDEROS R.; MUCHOWSKI J. M., J. ORG. CHEM., 1980, 45, NO 26, 5336-5339
作者:CARMONA O.、 GREENHOUSE R.、 LANDEROS R.、 MUCHOWSKI J. M.
DOI:——
日期:——
Synthesis and rearrangement of 2-(arylsulfinyl)- and 2-(alkylsulfinyl)pyrroles
作者:Olga Carmona、Robert Greenhouse、Rosita Landeros、Joseph M. Muchowski
DOI:10.1021/jo01314a025
日期:1980.12
Synthesis and rearrangement of pyrrolyl sulfides and sulfones
作者:Javier DeSales、Robert Greenhouse、Joseph M. Muchowski