Synthesis and some electrophilic substitution reactions of 2-phenyloxazole

A new synthesis of 2-phenyloxazole that includes the preparation of 2-phenyloxazoline and aromatization of the latter by the action of nickel peroxide was developed. It was established that under conditions that exclude protonation electrophilic substitution reactions are directed to the oxazole ring of 2-phenyloxazole; the 5 position is considerably more active than the 4 position.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 881–884, July, 1984