A new and facile synthesis of N-benzyl-N′-acylureas via reaction of dibenzoylhydrazine carboxamide and benzylamines
作者:Mehdi Valipour、Ann M. Chippindale、Aynaz Kouzeli、Hamid Irannejad
DOI:10.1080/00397911.2021.1960376
日期:2021.10.2
of N-acylureas (E1–5) via reaction of dibenzoylhydrazine carboxamide (N,2-bis(4-methoxybenzoyl)hydrazine-1-carboxamide) (C) and various benzylamines. Preparation of dibenzoylhydrazine carboxamide (C) was performed by the treatment of 5,6-diaryl-3-methylthio-1,2,4-triazine (B) with Oxone which leads to oxidation and triazine ring cleavage in high yield (82%). Five benzylamine derivatives containing different
摘要 在此,我们报告了一种通过二苯甲酰肼甲酰胺(N,2-双(4-甲氧基苯甲酰基)肼-1-甲酰胺)(C)和各种苄胺反应合成 N-酰脲(E1-5)的新方法。二苯甲酰肼甲酰胺 ( C ) 的制备是通过用 Oxone处理 5,6-二芳基-3-甲硫基-1,2,4-三嗪 ( B ) 来进行的,这导致氧化和三嗪环裂解,产率高 (82%) . 本研究中使用了五种含有不同给电子和吸电子取代基的苄胺衍生物。二苯甲酰肼甲酰胺 ( C )转化为 N-酰基脲 ( E1–5) 的产率) 在 40-55% 的范围内。中间体和最终产物的结构通过核磁共振、质谱和单晶 X 射线晶体学表征和确认。