Synthesis of new mesomeric betaines containing a triazolopyridiniumolate system and their unexpected function as masked isocyanates

Norio Sakai*, Makoto Funabashi, Satoshi Minakata, Ilhyong Ryu, Mitsuo Komatsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

A series of mesomeric betaines containing 1-alkylated triazolopyridiniumolate system were synthesized and their cycloaddition with dimethyl acetylenedicarboxylate were examined. An unusual ring-opening reaction occurred to give pyridone derivatives indicating that these betaines act as masked isocyanates.

Original languageEnglish
Pages (from-to)265-270
Number of pages6
JournalHeterocycles
Volume53
Issue number2
DOIs
StatePublished - 1 Feb 2000

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