The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2-Ethylbenzo[d]oxazole( cas:6797-13-3 ) is researched.Quality Control of 2-Ethylbenzo[d]oxazole.Patil, Abasaheb V.; Bandgar, Babasaheb P.; Lee, Soo-Hyoung published the article 《Silica supported fluoroboric acid: an efficient and reusable heterogeneous catalyst for facile synthesis of 2-aliphatic benzothiazoles, benzoxazoles, benzimidazoles and imidazo[4,5-b]pyridines》 about this compound( cas:6797-13-3 ) in Bulletin of the Korean Chemical Society. Keywords: cyclization aminophenol aminothiophenol phenylenediamine pyridinediamine ortho ester tetrafluoroborate catalyst; silica supported tetrafluoroboric acid catalyst heterocycle preparation. Let’s learn more about this compound (cas:6797-13-3).
2-Substituted benzothiazoles, benzoxazoles, benzimidazoles and imidazo[4,5-b]pyridines were prepared by cyclization of aminophenols, aminothiophenols, phenylenediamines and a pyridinediamine with ortho esters using silica-supported tetrafluoroboric acid a catalyst.
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Reference:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem