PROCESS FOR PREPARATION OF BENZOXAZOLE

摘要

Inflammation inhibitors, 5- or 6-substituted benzoxazole derivs. ≮I, R1 = H, halogen, C1-4 alkyl, C1-4 alkoxy; R2 = H, C1-4 alkyl, carboxyl C1-4 alkyl, cyano C1-4 alkyl-CH(R3)COOH, -CH2COOR3, -CH(R3)COOR3 (R3 = C1-4 alkyl)≉were prepd. by cyclization of oxime or hydrazone (II, Q = hydroxyl, amino; R4 = hydroxyl).