14210-51-6Relevant articles and documents
Synthesis of highly functionalized polycyclic quinoxaline derivatives using visible-light photoredox catalysis
He, Zhi,Bae, Minwoo,Wu, Jie,Jamison, Timothy F.
, p. 14451 - 14455 (2015/02/19)
A mild and facile method for preparing highly functionalized pyrrolo[1,2-a]quinoxalines and other nitrogenrich heterocycles, each containing a quinoxaline core or an analogue thereof, has been developed. The novel method features a visible-light-induced decarboxylative radical coupling of ortho-substituted arylisocyanides and radicals generated from phenyliodine(III) dicarboxylate reagents and exhibits excellent functional group compatibility. A wide range of quinoxaline heterocycles have been prepared. Finally, a telescoped preparation of these polycyclic compounds by integration of the in-line isocyanide formation and photochemical cyclization has been established in a three-step continuousflow system.
SYNTHESIS AND PROPERTIES OF PHENYLENEBIS-1H-TETRAZOLES
Gaponik, P. N.,Karavai, V. P.,Davshko, I. E.,Degtyarik, M. M.,Bogatikov, A. N.
, p. 1274 - 1278 (2007/10/02)
Heterocyclization of m- and p-phenylenediamines with orthoformic ester and sodium azide has given phenylenebis-1H-tetrazoles.Under these conditions, o-phenylenediamine gives benzimidazole. o-, m-, and p-Phenylenebis-1H-tetrazoles were also obtained from the nitroanilines via the intermediate nitro- and aminophenyltetrazoles.The reactions of the bistetrazoles examined were basic hydrolysis, aminomethylation, and complex formation with copper salts.