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ChemicalBook CAS DataBase List BENZOOXAZOLE-2-CARBOXYLIC ACID
21598-08-3

BENZOOXAZOLE-2-CARBOXYLIC ACID synthesis

3synthesis methods
-

Yield: 94%

Reaction Conditions:

Stage #1:carbon dioxide with AuOH(1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene);potassium hydroxide in tetrahydrofuran at 20; under 1125.11 Torr; for 0.25 h;
Stage #2:benzoxazole in tetrahydrofuran at 20; under 1125.11 Torr; for 12 h;
Stage #3: with hydrogenchloride in tetrahydrofuran;waterregioselective reaction;

References:

Boogaerts, Ine I. F.;Nolan, Steven P. [Journal of the American Chemical Society,2010,vol. 132,# 26,p. 8858 - 8859] Location in patent:supporting information; experimental part