Reactions of β-azidostyrenes with halogenoacetic acid. A novel formation of oxazoles
Abstract
The reaction of β-azidostyrene with trifluoro-, trichloro-, dichloro-, or monochloro-acetic acid gave 2-halogenomethyl-5-phenyloxazole via attack of halogenoacetate anion on a benzylic carbocation or a conjugate acid of the azide.