Selective Hofmann alkylation of aromatic-aliphatic diamines in the presence of carbon dioxide
作者:Alexei G. Balybin、Yuri M. Panov、Ludmila V. Erkhova、Dmitry A. Lemenovskii、Dmitry P. Krut’ko
DOI:10.1016/j.mencom.2019.07.028
日期:2019.7
Selective Hofmann alkylation at arylamino group in carbon dioxide medium was demonstrated on model diamines containing aliphatic and aromaticprimaryaminogroups, namely, 2-H2NC6H4CH2NH2, 3-H2NC6H4CH(Me)NH2, and 4-H2NC6H4CH2CH2NH2. Depending on the spatial factors, di- or trialkylarylammonium derivatives are selectively formed in amide solvents (DMF, DMA) without additional base.