Electron deficient heteroaromatic ammonioamidates. Part 24. N-(Quinazolin-3-io)amidates. Part 11. The photochemistry of N-(6,7-methylenedioxyquinazolin-3-io)amidates in acetone
作者:Gizella Barta-Szalai、József Fetter、Károly Lempert、Jørgen Møller、László Párkányi
DOI:10.1039/p19830002003
日期:——
N-(Quinazolin-3-io)amidates (1) may exist, depending on the nature of the groups R, R1, and R2, and in the absence of nucleophiles, as equilibrium mixtures of the monomeric (1) and dimeric (3) forms. For the first time evidence has been found for the generation of photoproducts of the dimeric forms (3)via irradiation of the quinazolinioamidates (1a–c) in acetone in which substantial amounts of the
取决于基团R,R 1和R 2的性质,并且在不存在亲核试剂的情况下,N-(喹唑啉-3-io)氨基甲酸酯(1)可以作为单体(1)和二聚体的平衡混合物存在(3)表格。首次发现通过存在大量二聚体(3a-c)的丙酮中的喹唑啉碘酸盐(1a-c)辐照生成二聚体形式的光产物(3)的证据。因此,喹唑啉基氨基甲酸酯(1)是唯一已知不仅以三种形式存在的杂芳族氨基酰胺基,即。单体,加合物(2)和二聚体(3),还可以提供所有三种形式的特征性光产物。