Synthesis of 2-Styrylbenzoxazole Derivatives by the Reaction of Styrylphenolic Schiff Bases with Thianthrene Cation Radical

Synthesis of 2-Styrylbenzoxazole Derivatives by the Reaction of Styrylphenolic Schiff Bases with Thianthrene Cation Radical

A simple and fast preparative method of 2‐styrylbenzoxazoles by oxidative intramolecular cyclization of styrylphenolic Schiff bases with thianthrene cation (Th+.ClO4−) is described. The oxidative cyclization of Schiff bases in the presence of 2,6‐di‐tert‐butyl‐4‐methylpyridine (DTBMP) gives 2‐styryl...

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Veröffentlicht in:Journal of heterocyclic chemistry 2013-05, Vol.50 (3), p.663-667
Hauptverfasser: Park, Hee Jung, Park, Myeong Soon, Lee, Tae Hee, Park, Koon Ha
Format: Artikel
Sprache:eng
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Zusammenfassung:A simple and fast preparative method of 2‐styrylbenzoxazoles by oxidative intramolecular cyclization of styrylphenolic Schiff bases with thianthrene cation (Th+.ClO4−) is described. The oxidative cyclization of Schiff bases in the presence of 2,6‐di‐tert‐butyl‐4‐methylpyridine (DTBMP) gives 2‐styrylbenzoxazole derivatives in better yields than those in the absence of DTBMP.
ISSN:0022-152X
1943-5193
DOI:10.1002/jhet.1707