A series of gamma-thionolactones was synthesized, with good yields, using a new combination of Lawesson's reagent (LR) and hexamethyldisiloxane (HMDO) in solvent-free conditions under microwave irradiation. (C) 2003 Elsevier Ltd. All rights reserved.
Fries; Mengel, Chemische Berichte, 1912, vol. 45, p. 3411