Liquid-phase photochemistry of pyridine and 2- and 4-picoline

Abstract

Pyridine is photosubstituted by cyclohexane and gives 2- and 4-cyclohexylpyridine by a radical mechanism: 2- and 4-picoline lead to the same compounds —4- and 6-cyclohexyl-2-picoline, indicating that the two picolines react through the same intermediate.