Acetylenic and allenic carbanions in the reaction with heterocumulenes: a simple way to fundamental heterocycles

Abstract

The synthetic potential of adducts of acetylenic and allenic carbanions with isothiocyanates and azatrienic systems based on them - precursors of fundamental aza- and thiaheterocycles - pyrroles, 2,3-dihydropyridines, pyridines, quinolines, 3 H -azepines, 4,5-dihydro-3 H -azepines, 2-azabicyclo[3.2.0]hept-2-енов, thietanes, thiophenes, thiophene-2(5 H )-imines, 1,3-thiazoles, 4,5-dihydro-1,3-thiazoles, and other heterocyclic structures with rare and/or difficult-to-build functional and pharmacophore substituents is briefly described.