Sean M. Laaman, O. Meth–Cohn, C. Rees
Feb 4, 2002
Citations
0
Influential Citations
4
Citations
Journal
Arkivoc
Abstract
Thiazyl chloride (N≡SCl) thermally derived from the preformed trimer and that made from the interaction of urethane, thionyl chloride and pyridine in benzene (Katz reagent) react somewhat differently with dibenzoyl –ethane, -ethene (E and Z) and –ethyne. In all cases, 3,4-dibenzoyl1,2,5-thiadiazole is formed but with Katz reagent a by-product is also formed, 5-benzoyl-3phenylisothiazole from the ethane and ethyne and 1-ethoxycarbonylamino-1,2-dibenzoylethene from the ethenes. With Katz reagent tetraphenylcyclopentadienone gives 3,4,5,6-tetraphenyl-2pyridone and its O-ethoxycarbonyl derivative.