An efficient synthesis of 2-(2-pyridyl)indoles by palladium(0)-catalyzed heteroarylation
作者:Mercedes Amat、Sabine Hadida、Joan Bosch
DOI:10.1016/s0040-4039(00)74069-x
日期:1993.7
A general method for the preparation of 2-(2-pyridyl)indoles based on the palladium(0)-catalyzed coupling of 1-(benzenesulfonyl)-2-indolylzinc chloride with 2-halopyridines is reported.
Palladium(0)-Catalyzed Heteroarylation of 2- and 3-Indolylzinc Derivatives. An Efficient General Method for the Preparation of (2-Pyridyl)indoles and Their Application to Indole Alkaloid Synthesis
the pyridine ring with subsequent electrophilic cyclization upon the indole 3-position from an appropriately N(b)-substituted 2-(2-piperidyl)indole, is reported. For this purpose, Pummerercyclizations have been extensively studied. Whereas the indole-unprotected sulfoxide 17 gives the corresponding indoloquinolizidine 19 in low yield and mainly undergoes an abnormalPummerercyclization that ultimately