Moon-Kook Jeon, Kyongtae Kim and Yung Ja Park
Chem. Commun., 2001, 1412-1413
DOI:
10.1039/B103974C,
Communication
Treatment of 5-arylimino-4-chloro-5H-1,2,3-dithiazoles with in situ generated (chloro)phenylketene in CH2Cl2 at rt gave azetidin-2-one-4-spiro-5′-(1′,2′,3′-dithiazoles) as major products, which reacted with primary and secondary alkylamines in CH2Cl2 at rt to afford bis(2-oxo-azetidin-4-yl) trisulfides in good to excellent yields.