33264-09-4Relevant academic research and scientific papers
Synthetic applications of functionalized phosphoranylideneamino-1,4-benzoquinones: Preparation of oxazolo[5,4-b]phenoxazine, 4H-[3,1]benzoxazino-5,8-quinone and benzoxazole derivatives
Rodriguez-Morgade, Salome,Vazquez, Purificacion,Torres, Tomas
, p. 6781 - 6794 (1996)
The aza-Wittig reaction of the triphenylphosphoranylideneamino-1,4-benzoquinone 1 with aryl isocyanates and aroyl chlorides allows the preparation of oxazolo[5,4-b]phenoxazine and benzoxazole derivatives. The same reaction using 7 as iminophosphoranoquinone provides substituted benzoxazoles and the previously unreported 4H-[3,1]benzoxazino-5,8-quinones.
