T. Ohsumi, H. Neunhoeffer
1992
Citations
0
Influential Citations
9
Citations
Journal
Tetrahedron
Abstract
Abstract Ethyl 1,2,4-triazine-5-carboxylates 6 were prepared by heating N,N-dimethylaminomethylene- or ethoxymethylenehydrazones 5 with ammonium acetate in acetic acid at 100°C. NMR studies confirmed the absence of their regio isomers (6-carboxylates), showing the high regioselectivity of this procedure.