The First Approach to the Synthesis of 1-Unsubstituted 2-Arylindolizines by Intramolecular 1,5-Dipolar Cyclization of 2-(2-Arylethenyl)pyridinium Ylides in the Presence of Tetrakis(pyridine)cobalt (II) Dichromate
Parrick, John; Rami, Harshad K.; Short, Eric L., Journal of Chemical Research - Part S
作者:Parrick, John、Rami, Harshad K.、Short, Eric L.
DOI:——
日期:——
The First Approach to the Synthesis of 1-Unsubstituted 2-Arylindolizines by Intramolecular 1,5-Dipolar Cyclization of 2-(2-Arylethenyl)pyridinium Ylides in the Presence of Tetrakis(pyridine)cobalt (II) Dichromate
作者:Jian Zhou、Yuefei Hu、Hongwen Hu
DOI:10.1055/s-1999-3673
日期:——
The first approach to the preparation of 1-unsubstituted 2-arylindolizines by intramolecular 1,5-dipolar cyclization of 2-(2-arylethenyl)pyridinium ylides 2a-v in the presence of tetrakis(pyridine)cobalt (II) dichromate was developed. Several kinds of novel 1-unsubstituted 2-aryl-3-acetyl-, 3-benzoyl-, 3-ethoxycarbonyl- and 3-(4-nitrobenzoyl)indolizines 3a-v were synthesized under the mild conditions in reasonable to moderate yields.