A photochemical reaction of 2-acetyl-3-alkylamino-1,4-benzoquinones: formation of benzoxazoles
Abstract
A number of 2-acetyl-3-alkylamino-6-anilino-1,4-benzoquinones have been prepared by the reaction of 2-acetyl-3,6-dianilino-1,4-benzoquinone with alkylamines in chloroform solution. Irradiation of 3-methylamino-, 3-n-propylamino-, and 3-phenethylamino-2-acetyl-6-anilino-1,4-benzoquinones in solution gave benzoxazoles and 2-acetyl-3-amino-6-anilino-1,4-benzoquinone.