Tscherniac-Einhorn reaction

Tscherniac-Einhorn reaction. Introduction of the amidomethyl group into aromatic rings or activated methylene groups in the presence of sulfuric acid. 

The r/ireo-3-amino-2-hydroxy-acids (225a,b) have been prepared by regio-specific ring-opening of the appropriate cw-2,3-epoxy-acids by ammonia. Both compounds have recently been found in nature. A review has been published on the preparation of a-amino-acid derivatives by the Tscherniac-Einhorn reaction. ... 

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