Studies on Ketene and its Derivatives. X. Reaction of Diketene with Schiff Base
作者:Tetsuzo Kato、Yutaka Yamamoto
DOI:10.1248/cpb.13.959
日期:——
The adduct obtained from the reaction of diketene with the Schiff base, N-benzylidene-tert-butylamine, is not a heterocyclic compound, 1-tert-butyl-2-phenyl-4, 6-piperidinedione (II), as proposed by Oda, et al., but N-tert-butyl-2-benzylideneacetoacetamide (IIIb). Similarly, the reaction of diketene with N-benzylideneaniline afforded 2-benzyli-deneacetoacetanilide (IIIa). The evidence for this structure assignment is described.
二酮与希夫碱 N-亚苄基叔丁胺反应得到的加合物不是 Oda 等人提出的杂环化合物 1-叔丁基-2-苯基-4,6-哌啶二酮 (II),而是 N-叔丁基-2-亚苄基乙酰乙酰胺 (IIIb)。同样,二酮与 N-亚苄基苯胺反应生成了 2-苄基-2-亚苄基乙酰乙酰苯胺(IIIa)。本文描述了这一结构分配的证据。