乙醇

4-benzoyl-4H-1,4-benzoxazine-2-carbaldehyde

4-benzoyl-2,3-dibromo-3,4-dihydro-2H-benzo[1,4]oxazine-2-carboxylic acid ethyl ester

苯甲酰氯

3,4-二氢-2H-1,4-苯并恶嗪-2-甲醇