One-pot synthesis of N-(2-heteroaryl)-.alpha.-amino esters by the regiospecific 2-N-(.alpha.-alkoxycarbonyl)alkylation of 2-aminoazines and -azoles with glyoxals and alcohols promoted by perchloric acid
One-pot synthesis of N-(2-heteroaryl)-.alpha.-amino esters by the regiospecific 2-N-(.alpha.-alkoxycarbonyl)alkylation of 2-aminoazines and -azoles with glyoxals and alcohols promoted by perchloric acid