4-Pyridylnitrene and 2-pyrazinylcarbene

C Wentrup, A Reisinger…

文献索引：Wentrup, Curt; Reisinger, Ales; Kvaskoff, David Beilstein Journal of Organic Chemistry, 2013 , vol. 9, p. 754 - 760

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被引用次数: 5

摘要

Abstract Both flash vacuum thermolysis (FVT) and matrix photolysis generate 2- diazomethylpyrazine (22) from 1, 2, 3-triazolo [1, 5-a] pyrazine (24). FVT of 4-azidopyridine (18) as well as of 24 or 2-(5-tetrazolyl) pyrazine (23) affords the products expected from the nitrene, ie, 4, 4'-azopyridine and 2-and 3-cyanopyrroles. Matrix photolyses of both 18 and 24 result in ring expansion of 4-pyridylnitrene/2-pyrazinylcarbene to 1, 5-diazacyclohepta-1, ...