S. Sachar

Facile, regioselective [4 + 2] cycloaddition involving 1-aryl-4-phenyl-1-azadienes and allenic esters: an efficient route to novel substituted 1-aryl-4-phenyl-1,4-dihydropyridines.

M. Ishar, N. K. Girdhar, A. Marwaha, 2001, Organic letters.