Page 1. R. Balicki, L. Kaczmarek, P. Nantka-Namirski 883 A Mild and Facile Preparation of Sulfoxides from Sulfides by Use of the H202-Urea/Phthalic Anhydride System Roman Balicki *, Lukasz Kaczmarek and Pawel Nantka-Namirski Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, PL-01-224 Warszawa, Poland Received March 10, 1992 ... SOC.. Chem. Com- mun. 1990, 1378. Liebigs Ann. Chem. ...