Benzoxazole carboxylic-acid
SMARTS: c;r6:1](-[OH1:2]):[c;r6:3](-[NH2:4]).[#6:6]-[C;R0:5](=[OD1])-[OH1]>>[c:3]2:[c:1]:[o:2]:[c:5](-[#6:6]):[n:4]@2
Conditions
Reactant 1: aminophenol.
Reactant 2: carboxylic acid.
R = Ar, alkyl.
References
J. A. Seijas, M. P. Vázquez-Tato, M. R. Carballido-Reboredo, J. Crecente-Campo, L. Romar-López, Synlett, 2007, 313-316
Other sources
Organic chemistry