Semi-empirical quantum chemical studies using PM3 suggest that the preferred reaction between a Grignardreagent and a combined aminonitrile–oxazolidine system involves initial formation of a Lewis acid–base complex between magnesium and the central nitrogen atom, followed by preferred reaction with the aminonitrile function; model studies confirm that this reaction proceeds by addition rather than
The Rabe amination after a century: direct addition of N-heterocycles to carbonyl compounds
作者:Daniele M. Scarpino Schietroma、Mattia R. Monaco、Valerio Bucalossi、Philipp E. Walter、Patrizia Gentili、Marco Bella
DOI:10.1039/c2ob25595b
日期:——
presented. This kind of reaction was originally employed in 1918 in a key step for the conversion of quinotoxine to quinine. Ketones and α-substituted aldehydes give the corresponding α-aminated carbonylcompounds in moderate yield. α,α-Unsubstituted aldehydes give rise to amino ketones via a novel rearrangement.