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Communication | Regular issue | Vol 19, No. 2, 1982, pp.281-284
Published online, 1st January, 1970
DOI: 10.3987/R-1982-02-0281
Thermal Ring-expansion of 6-Ethynyl-1,2,5,6-tetrahydropyridine N-Imides into Diazonine Derivatives

Haruki Sashida and Takashi Tsuchiya

*School of Pharmacy, Hokuriku Universitym 3-Ho, Kanagawa machi, Kanazawa 920-1181, Japan


The thermolysis of the 6-ethynyl-1,2,5,6-tetrahydropyridine N-imides (5 and 6) resulted in the [2,3]-sigmatropic rearrangement with the ethynyl group to give the novel dihydrodiazonines (9) via the allene intermediates (8).