Cai R, Wang D, Chen Y, Yan W, Geise NR, Sharma S, Li H, Petersen JL, Li M, Shi X. Facile synthesis of fluorescent active triazapentalenes through gold-catalyzed triazole-alkyne cyclization.
Chem Commun (Camb) 2015;
50:7303-5. [PMID:
24872118 DOI:
10.1039/c4cc03175j]
[Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescent active triazapentalene zwitterions (TAPZs) were prepared through Au(I) catalyzed triazole-alkyne 5-endo-dig cyclization. While an effective gold catalyst turnover (0.5% loading, up to 96% yield) was achieved, the stability of these new 10-π-electron bicyclic structures was also significantly improved, which warranted future applications of these fluorescent dyes.
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