Heterocyclic Compounds
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ChemInform Abstract: Synthesis of Lactones by Intramolecular Addition of Alkoxythiocarbonyl Free Radicals to Acetylenes.
First published: May 30, 1989
Abstract
The homopropargylic (di)thiocarbonates (I) undergo reductive cyclization upon reaction with tributyltin hydride and triethylborane, forming the alkylidene-γ-lactones (II).
ChemInform Abstract
The homopropargylic (di)thiocarbonates (I) undergo reductive cyclization upon reaction with tributyltin hydride and triethylborane, forming the alkylidene-γ-lactones (II). The homoallylic dithiocarbonates (III) are analogously converted to the butyrolactones (IV).
