Carbenes in the synthesis of heterocycles (review)

The syntheses of heterocyclic compounds by reactions of carbenes with carbon-heteroatom multiple bonds, isomerization of unstable adducts of carbenes to carbon-carbon bonds, and the incorporation of carbenes in C-H, C-N, and C-O bonds are examined.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1443–1464, November, 1976.