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Synthesis 1995; 1995(11): 1397-1400
DOI: 10.1055/s-1995-4106
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Expeditious Synthesis of Substituted 2-Thiazolin-4-ones by One-Pot Reaction of Some Conjugated Azoalkenes with Thioamides

Orazio A. Attanasi, Lucia De Crescentini, Elisabetta Foresti, Roberta Galarini, Stefania Santeusanio, Franco Serra-Zanetti*
  • *Dipartimento di Chimica ”G. Ciamician”, Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy, Fax +39(722)2907
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Publication Date:
31 December 2000 (online)

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Thioamides easily react under very mild conditions with some conjugated azoalkenes in one pot to give in good yield substituted 2-thiazolin-4-ones 3a-p that frequently exhibit hydrazono-hydrazino tautomerism in the chain at position 5 of the ring. The methylated derivative 3q was studied by X-ray diffraction in order to assign unequivocally the molecular structure.

alkoxycarbonylazoalkenes - aminocarbonylazoalkenes - thioamides - ureas - 2-thiazolin-4-ones