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Communication | Regular issue | Vol 12, No. 11, 1979, pp.1471-1474
Published online, 1st January, 1970
DOI: 10.3987/R-1979-11-1471
Photolysis of Thieno[2,3-c]pyridine N-Imides: Formation of Novel 1,3- and 2,3-Thienodiazepines

Takashi Tsuchiya,* Michiko Enkaku, and Hiroyuki Sawanishi

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


Photolysis of the 7-methyl-thieno[2,3-c]pyridine N-imides (3) resulted in rearrangements with ring-expansion to give 1H-1,3- (4) and 3H-2,3- (5) thieno[2,3-d]diazepines, which are previously unknown heterocyclic ring systems.