关于我们一般合成多环杂芳族化合物的机理方面的研究表明,遵循方案2中概述的反应序列。在我们的合成条件下,邻位重排(8)→(9)优于已知在酸性条件下发生的对位重排。在分子间反应中,苯胺曼尼希碱(29)被转化为苯并[ a ] r啶(30)。合成似乎仅限于推定的中间体(9)不属于酰胺基团的底物。在这些研究过程中,已经发现了三环化合物(24)和(25)的有效合成。
Molecular iodine mediated oxidative cleavage of the C–N bond of aryl and heteroaryl (dimethylamino)methyl groups into aldehydes
作者:Ketan S. Mandrekar、Santosh G. Tilve
DOI:10.1039/d0nj05832g
日期:——
The oxidative cleavage of the C–N bond of aryl and heteroaryl (dimethylamino)methyl groups is achieved by employing molecular iodine as a mild oxidizing agent under ambient conditions in the presence of a mild base. The important reaction of C3 formylation of free NH and substituted indoles containing various substituents is accomplished from the corresponding Mannich bases. This methodology can also
A general and practicable synthesis of polycyclic heteroaromatic compounds. Part 2. Reaction of quinone-methides of pyridones, pyrimidines, coumarin, and benzene with aromatic amines in a novel synthesis of polycyclic heteroaromatic compounds
作者:Janet L. Asherson、Orhan Bilgic、Douglas W. Young
DOI:10.1039/p19800000522
日期:——
The synthesis of polycyclic heteroaromatic compounds using the reaction of a quinone-methide, generated in situ, with an aromatic amine has been successfully extended using quinone-methides of coumarin and of pyridones. Preliminary studies with the benzenoid quinone-methide (33) have so far proved to give only low yields of the expected acridines. Generation of ‘quinone-methides’ in which the carbonyl