Synthesis of new bridgehead heterocycles: Pyrimido[3′,2′:3,4]- 1,2,4-triazino[5,6-b]-indoles

Sunita Bhagat, Manish Jain, Mukesh K. Pandey, Pragati, Anjali Saxena, Subhash C. Jain

Research output: Contribution to journalArticlepeer-review


A new bridgehead nitrogen heterocycle viz. 11-carboethoxy-9-oxo- pyrimido[3′2′:3,4]-1,2,4-triazino[5,6-b]indble 3 has been synthesized from 3-azido-5H-,1,2,4-triazino[5,6-b]indole 2 by its reaction with diethyl fumerate. The intermediate 2 was obtained by treating 3-hydrazino-5H-1,2,4-triazino[5,6-b]indole with NaNO2 in presence of polyphosphoric acid. A plausible mechanism for the formation of 3 has been formulated and discussed.

Original languageEnglish (US)
Pages (from-to)272-276
Number of pages5
JournalHeteroatom Chemistry
Issue number4
StatePublished - 2006

ASJC Scopus subject areas

  • General Chemistry


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