Lewis acid catalyzed condensation of 2-aminohetarene N-oxides with N,N-dimethylformamide dimethyl acetal
作者:Sergey А. Karalash、Dmitry M. Bystrov、Ivan V. Ananyev、Leonid L. Fershtat
DOI:10.1007/s10593-021-03031-0
日期:2021.11
A method for the introduction of the N,N-dimethylformamidine protective group in a series of six-membered 2-aminohetarene N-oxides was developed. It was shown that 2-amino derivatives of N-oxides of various six-membered heterocycles (pyridines, pyrimidines, pyrazines, tetrazines) successfully enter the reaction. The stability of the N,N-dimethylformamidine protecting group in 2-aminohetarene N-oxides