title: Regioselective synthesis of medium-sized bicyclic butenolides by lewis acid catalyzed cyclization of cyclic 1, 3-Bis(trimethylsilyloxy)-1,3-butadienes with oxalyl chloride
abstract: A new strategy for the synthesis of medium-sized bicyclic gamma-alkylidenebutenolides is reported which involves Me(3)SiOTf-catalyzed cyclization of cyclic 1, 3-bis(trimethylsilyloxy)-1,3-butadienes with oxalyl chloride.
authors.affiliation: Institut fur Organische Chemie der Georg-August-Universitat Gottingen, Tammannstrasse 2, 37077 Gottingen, Germany.
authors.initials: P
authors.lastname: Langer
authors.initials: NN
authors.lastname: Saleh