Catalytic Dealkylative Synthesis of Cyclic Carbamates and Ureas via Hydrogen Atom Transfer and Radical-Polar Crossover
作者:Takuya Nagai、Nao Mimata、Yoshihiro Terada、Chikayoshi Sebe、Hiroki Shigehisa
DOI:10.1021/acs.orglett.0c01872
日期:2020.7.17
Guided by the transition-metal hydrogen atom transfer and radical-polar crossover concepts, we developed a functional-group-tolerant and scalable method for the synthesis of cyclic carbamates and ureas, which are found in the structures of bioactive compounds. This method provides not only a common five-membered ring but also six-to-eight-membered ring products. The reaction proceeds through the intramolecular
在过渡金属氢原子转移和自由基-极性交叉概念的指导下,我们开发了一种功能强大且可扩展的方法,用于合成在生物活性化合物结构中发现的环状氨基甲酸酯和脲。该方法不仅提供普通的五元环,而且提供六至八元环的产品。反应通过烷基钴(IV)中间体的分子内置换和2,4,6-可力丁的脱烷基反应进行;这些步骤的活化能通过DFT计算。