Stannylcupration of γ-Heterosubstitued Acetylenic Esters: a New Route to 4-Stannylated Five Membered N- and O- Heterocycles.

Article abstract of DOI:10.1016/0040-4020(94)01086-F

4-Tributylstannyl,2-(5H)-furanone and pyrrolone have been prepared in good yields by addition of mixed stannylcuprate reagent on γ-amino and γ-hydroxy acetylenis esters.The use of these compounds as useful intermediates for the selective functionalization