Synthesis of Alkyl (5-Oxo-2-thioxo-[1,3,4]thiadiazinan-6-ylidene)acetates by the Reaction of N-Aminorhodanine, Dialkyl Acetylenedicarboxylates, and Triphenylphosphine

Mohammad Anary-Abbasinejad Department of Chemistry, Islamic Azad University, Yazd Branch, Yazd, IranCorrespondence[email protected]

Mohammad H. Mosslemin Department of Chemistry, Islamic Azad University, Yazd Branch, Yazd, Iran

Alireza Hassanabadi Department of Chemistry, Islamic Azad University, Yazd Branch, Yazd, Iran

Masoumeh Tabatabaee Department of Chemistry, Islamic Azad University, Yazd Branch, Yazd, Iran

Abstract

Protonation of the reactive zwitterionic intermediate produced from the reaction between triphenylphosphine and dialkyl acetylenedicarboxylates by N-aminorhodanine followed by the addition of the conjugate anion of N-aminorhodanine on the produced vinylphosphonium cation leads to alkyl (5-oxo-2-thioxo-[1,3,4]thiadiazinan-6-ylidene)acetates in good yields.

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Synthesis of Alkyl (5-Oxo-2-thioxo-[1,3,4]thiadiazinan-6-ylidene)acetates by the Reaction of N-Aminorhodanine, Dialkyl Acetylenedicarboxylates, and Triphenylphosphine

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Synthesis of Alkyl (5-Oxo-2-thioxo-[1,3,4]thiadiazinan-6-ylidene)acetates by the Reaction of N-Aminorhodanine, Dialkyl Acetylenedicarboxylates, and Triphenylphosphine

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