Heteroaryl radicals. Part 1. Synthesis of linear pyridine-fused ring systems by endo-selective 2-pyridyl radical cyclizations

…, B Achari, R Mukhopadhyay, AK Banerjee

Index: Maiti, Sarbendu; Achari, Basudeb; Mukhopadhyay, Ranjan; Banerjee, Asish Kr. Journal of the Chemical Society. Perkin Transactions 1, 2002 , # 15 p. 1769 - 1773

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Citation Number: 8

Abstract

Bu3SnH-induced 2-pyridyl radicals, derived from the 2-bromopyridinyl-substituted methylenecyclohexane 4 and also the vinyl-and the allyl-cyclohexanols 5 and 6, undergo endo-selective cyclizations to give six-, seven-and eight-membered-ring annulated pyridines 7, 11 and 12.