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Note | Regular issue | Vol 65, No. 5, 2005, pp.1205-1214
Published online, 1st March, 2005
DOI: 10.3987/COM-05-10341
Synthesis of Benzo[b]naphtho[2,3-d]thiophene-6,11-diones via Palladium(II) Acetate-mediated Cyclization of 3-Arylthio-1,4-naphthoquinone

Chung-Kyu Ryu,* Ik Hwa Choi, Jung Yoon Lee, and Seong Hee Jung

*College of Pharmacy, Ewha Womans University, 11-1 Daehyun-dong, Seodaemun-ku, Seoul 120-750, Korea


Palladium(II)-mediated oxidative cyclization of 3-arylthio-1,4-naphthoquinone (4) giving biologically important benzo[b]naphtho[2,3-d]thiophene-6,11-diones (2) has been performed with a stoichiometric amount of palladium(II) acetate in distillated acetic acid.