Keteneおよびその誘導体の研究(第24報) : DiketeneとKetimineとの反応

抄録

Reaction of three kinds of ketimine-type compounds, i.e. benzhydrilideneimine (Va), 1, 2-diphenylethylideneimine (Vb), and 1-phenylpropylideneimine (Vc), with diketene was carried out and oxazine-type compounds were obtained in a good yield, respectively forming 3, 4-dihydro-2, 2-diphenyl-6-methyl-4-oxo-2H-1, 3-oxazine (VIa), 3, 4-dihydro-2-benzyl-6-methyl-4-oxo-2-phenyl-2H-1, 3-oxazine (VIb), and 3, 4-dihydro-2-ethyl-6-methyl-4-oxo-2-phenyl-2H-1, 3-oxazine (VIc). Hydrolysis of these products with 10% hydrochloric acid resulted in the formation of benzophenone, acetone, carbon dioxide, and ammonium chloride from VIa. Reaction of with aniline gave N-benzhydrylideneaniline (VIIa) and acetacetanilide (VIII).