Sequential mono-N-arylation of piperazine nitrogens. Part 2: The role of hydrogen bonding
作者:Jeffrey Eckert、Tze-Ming Chan、Rebecca M. Osterman、Joseph B. Lambert、Dinesh Gala
DOI:10.1016/s0040-4039(99)01104-1
日期:1999.7
A mechanistic study of the simple sequential N-arylation of piperazine suggests that in an electron-withdrawing group (EWG) containing N-arylated piperazines, hydrogen bonding of the secondary amine hydrogen is important for its non-metal catalyzed conversion to N,N′-diaryl piperazines. A combination of synthetic experiments, molecular modeling, and NMR studies were carried out to test this hypothesis
对哌嗪简单顺序进行N-芳基化的机理研究表明,在包含N-芳基哌嗪的吸电子基团(EWG)中,仲胺氢的氢键对于其非金属催化的N,N'转化很重要。-二芳基哌嗪。进行了合成实验,分子建模和NMR研究的组合,以检验该假设。