3-溴苯甲醛乙二醇缩醛的合成研究

THE SYNTHESIS OF 2-(3-(BROMOPHENY)-1.3-(DIOXOLANE)

研究了 3-溴苯甲醛与乙二醇在酸性催化剂中进行缩醛化反应。结果表明 ,当用HCl为催化剂。乙二醇 :3-溴苯甲醛为 1.2 9(mol) ,反应时间 5h ,溶剂为CHCl3,回流 ,产物收率为 90 %。

2-(3-Bromophenyl)-1.3-dioxolane was synthesized by the condensation of 3-Bromobenzaldehyde and ethylene glycol in the acid catalyst.At the reflux condition of CHCl 3.Ethylene glycol/3-Bromobenzaldehyde 1.29(mol)and 5 h.The concentration of 2-(3-Bromophenyl)-1.3-dioxolane in product is about 90%.Over the catalyst of HCl.