Synthesis of 1-(2-Hydroxyphenyl)-2,4-imidazolidinedione Derivatives through Cyclic Transformations of Ethyl 2-Oxo-3(2H)-benzoxazoleacetate Derivatives

Article abstract of DOI:10.1002/jhet.5570330645

A series of ethyl 2-oxo-3(2H)-benzoxazoleacetate derivatives 2 have been synthesized. By reaction with ammonia, primary amines or hydrazine, these compounds 2 were transformed into 1-(2-hydroxyphenyl)-2,4-imidazolidinedione derivatives 4, 5 and 6, respect