Synthesis of 2-methylene-1,3-dioxygenated cyclopentanes and cyclopentenes
Abstract
Anthracene adducts (4)–(6) are synthesized via a convenient general synthesis and subjected to a retro Diels-Alder reaction to furnish the corresponding 2-methylene-1,3-dioxygenated cyclopentenes and cyclopentanes (1)–(3)via either flash vacuum pyrolysis or room temperature silica gel-catalysed decomposition.