1038478-81-7Relevant articles and documents
Ring opening of 2-(benzylamino)-2H-1,4-benzoxazin-3(4H)-ones and 2-bromo-2H-1,4-benzoxazin-3(4H)-ones
Ilas, Janez,Kikelj, Danijel
experimental part, p. 654 - 664 (2009/02/07)
Substituted 2-(benzylamino)-2H-1,4-benzoxazin-3(4H)-ones are unstable under alkaline and acidic conditions, undergoing opening of the benzoxazinone ring. 2-Bromo-2H-1,4-benzoxazin-3(4H)-ones show similar degradation under alkaline conditions, while replacement of Br at C(2) to give 2-hydroxy-2H-1,4-benzoxazin- 3(4H)-ones was observed only under mild alkaline conditions. Mechanisms of ring opening and degradation to 2-aminophenol derivatives are proposed.