Novel synthesis of<i>N,N</i>′-dialkyl cyclic ureas using sulfur-assisted carbonylation and oxidation
作者:Takumi Mizuno、Takeo Nakai、Masatoshi Mihara
DOI:10.1002/hc.20508
日期:——
The first example of cyclic urea synthesis from secondary amines by the use of sulfur-assisted carbonylation and oxidation was established. By combined sulfur-assisted carbonylation of secondary α,ω-diamines under an ambient pressure of carbon monoxide at 20°C with oxidation by molecular oxygen (0.1 MPa, 20°C), a facile synthetic method for N,N′-dialkyl cyclic ureas including 1,3-dimethyl-2-imidazolidinone
建立了使用硫辅助羰基化和氧化从仲胺合成环脲的第一个例子。通过在 20°C 的环境压力下,在一氧化碳的环境压力下硫辅助羰基化与分子氧氧化 (0.1 MPa, 20°C),一种简便的 N,N'-二烷基环合成方法开发了包括 1,3-二甲基-2-咪唑烷酮在内的尿素。© 2009 Wiley Periodicals, Inc. 杂原子化学 20:64–68, 2009; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20508