Synthesis of 2Н-azolo[1,5-а][1,2,3]triazolo[4,5-е]pyrimidines
摘要:
6-Nitroazolo[1,5-a]pyrimidines were used as dipolarophiles in a reaction with sodium azide providing previously unknown 2De-azolo[1,5-a]-[1,2,3]triazolo[4,5-e]pyrimidines.
Synthesis of 2Н-azolo[1,5-а][1,2,3]triazolo[4,5-е]pyrimidines
摘要:
6-Nitroazolo[1,5-a]pyrimidines were used as dipolarophiles in a reaction with sodium azide providing previously unknown 2De-azolo[1,5-a]-[1,2,3]triazolo[4,5-e]pyrimidines.
C–H functionalization of triazolo[a]-annulated 8-azapurines
作者:Evgeny B. Gorbunov、Gennady L. Rusinov、Evgeny N. Ulomsky、Vladimir L. Rusinov、Valery N. Charushin、Oleg N. Chupakhin
DOI:10.1016/j.tetlet.2016.04.052
日期:2016.5
Direct C–H functionalization of triazolo[a]-annulated 8-azapurines with phenol ethers or thiophene has been performed using the oxidative nucleophilic displacement of a hydrogen on the pyrimidine ring, proceeding through the intermediacy of the corresponding σH-adducts.
Design of fused systems based on σH-adducts of 6-nitro-1,2,4-triazolo[1,5-a]pyrimidine with π-excessive heteroaromatic compounds
作者:E. B. Gorbunov、G. L. Rusinov、O. N. Chupakhin、V. N. Charushin
DOI:10.1007/s11172-009-0172-6
日期:2009.6
A new method was developed for the construction of tetra- and pentacyclic fused systems based on σH-adducts of 6-nitro-1,2,4-triazolo[1,5-a]pyrimidine with π-excessive heteroaromatic compounds. The method involves the reduction of the nitro group accompanied by the aromatization of the dihydropyrimidine ring and followed by the cyclocondensation of the amino derivative with aldehydes.