Under acidic condition,5-(P-hydroxyphenyl)hydantion was synthesized by the reaction of glyoxylic acid,phenol,uren and so on as a raw material,in the presence of methanol as catalyst.

• 以低碳醇(甲醇、乙醇)为催化剂,乙醛酸、苯酚、尿素等为原料,在酸性条件下一步法合成了5-对羟基苯乙内酰脲。