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Novel Synthesis of Benzo[e][1,2,4]triazines via Cyclocondensation of Azooximes Full article

Journal Advanced Synthesis & Catalysis
ISSN: 1615-4169 , E-ISSN: 1615-4150
Output data Year: 2026, Volume: 368, Number: 10, Article number : e70430, Pages count : DOI: 10.1002/adsc.70430
Authors Frumkin Alexander E. 1 , Dilman Alexander D. 1
Affiliations
1 N. D. Zelinsky Institute of Organic Chemistry, Moscow, Russian Federation

Abstract: An approach for the selective synthesis of benzo[e][1,2,4]triazines from readily accessible azooximes is described. The method is based on cyclocondensation reaction performed at room temperature in the presence of trifluoroacetic anhydride and methanesulfonic acid. The process leads to specifically substituted benzo[e][1,2,4]triazines, which can serve as precursors of stable Blatter radicals. The method features inexpensive and readily available starting materials, broad substrate scope, mild and metal-free reaction conditions, and versatile functionalization of the 1,2,4-benzotriazines.
Cite: Frumkin A.E. , Dilman A.D.
Novel Synthesis of Benzo[e][1,2,4]triazines via Cyclocondensation of Azooximes
Advanced Synthesis & Catalysis. 2026. V.368. N10. e70430 . DOI: 10.1002/adsc.70430 WOS Scopus OpenAlex
Dates:
Submitted: Jan 31, 2026
Published online: May 21, 2026
Identifiers:
≡ Web of science: WOS:001770782600001
≡ Scopus: 2-s2.0-105039516040
≡ OpenAlex: W7161966333
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