Selective substitution reactions of methoxycarbonylamino-1-(1-benzotriazolyl)alkanes with active methylene compounds
作者:Liejin Zhou、Xin Lv、Hui Mao、Xiaoxia Wang
DOI:10.1002/jhet.612
日期:2011.3
Benzotriazole adducts methoxycarbonylamino‐1‐(1‐benzotriazolyl)alkanes 1 were derived from the condensation of an aldehyde, benzotriazole, and methylcarbamate. The leaving tendency of methoxycarbonylamino group (MeOCONH) and benzotriazole group (Bt) was investigated by treatment of the adducts with active methylene compounds under either Lewis acid‐catalyzed or basic conditions. In the presence of
苯并三唑加合物甲氧基羰基氨基-1-(1-苯并三唑基)烷烃1是由醛,苯并三唑和氨基甲酸甲酯的缩合反应制得的。通过在路易斯酸催化或碱性条件下用活性亚甲基化合物处理加合物,研究了甲氧羰基氨基(MeOCONH)和苯并三唑基(Bt)的离去趋势。在SmI 3的存在下,MeOCONH在离开过程中比Bt优先,而在MeONa的存在下,Bt被优先取代。因此,两个离去基团的可调取代可用于不同的合成目的。杂环化学杂志,00,00(2011)。