Journal of the Chemical Society. Perkin transactions I p. 1469 - 1472 (1994)
Update date:2022-07-29
Topics:
Bssaibis, Mohammed
Robert, Albert
Souizi, Abdel Aziz
Depending on the experimentalconditions, either the 2-piperidino-3-aryl-4-alkylthio-5-aryl- or -alkyl-2,3-dihydro-1,3-thiazoles 8 or the 2-unsubstituted 3-aryl-4-alkylthio-5-aryl- or -alkyl-2,3-dihydro-1,3-thiazoles 10 have been prepared starting from mesoionic 5-alkyl- or 5-aryl-2-piperidino-1,3-thiazole-4-thiolates 6.After alkylation of the mesoionic compound, thebest conditions to isolate thehse two dihydrothiazoles were established froma mechanistic study of the reduction.Compound 8 is known to give dithiadiazafulvalenes through its thiazolium tetrafluoroborate salts.We show here that such salts can also be obtained from 10.
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