Synthesis of blue light emitting heterocycles via cyclization of 2-pyridine derived 4-azido-r1,2,3-triazoles,Organic & Biomolecular Chemistry

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Synthesis of blue light emitting heterocycles via cyclization of 2-pyridine derived 4-azido-r1,2,3-triazoles
Organic & Biomolecular Chemistry ( IF 2.9 ) Pub Date : 2021-08-16 , DOI: 10.1039/d1ob01084k
Biligma D Tsyrenova ₁ , Victor N Khrustalev _{2,

3} , Valentine G Nenajdenko ₁

Affiliation

An efficient synthesis of 2-pyridine derived 4-azido-1,2,3-triazoles was elaborated using the corresponding dichlorodiazadienes as precursors. The reaction of the prepared 2-azine substituted diazadienes with sodium azide permits the preparation of target triazoles isolated in up to 92% yield. Subsequent thermal cyclization was studied. Elimination of molecular nitrogen promoted the cyclization of nitrene at the azine nitrogen. As a result, a family of 2H-[1,2,3]triazolo[4′,5′:3,4]pyrazolo[1,5-a]pyridin-5-ium-4-ides was prepared. The synthesized compounds are members of a new heterocyclic system. Moreover, these compounds are new attractive blue light emitting molecules.

中文翻译：

2-吡啶衍生的4-叠氮基-r1,2,3-三唑环化合成蓝光杂环

使用相应的二氯二氮杂二烯作为前体，详细阐述了 2-吡啶衍生的 4-叠氮基-1,2,3-三唑的有效合成。制备的 2-吖嗪取代的二氮杂二烯与叠氮化钠的反应允许以高达 92% 的收率制备分离的目标三唑。研究了随后的热环化。分子氮的消除促进了氮烯在吖嗪氮上的环化。结果，制备了2 H -[1,2,3]三唑并[4',5':3,4]吡唑并[1,5 - a ]吡啶-5-ium-4-ides族。合成的化合物是新杂环系统的成员。此外，这些化合物是新的有吸引力的蓝色发光分子。

更新日期：2021-09-13

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