本发明公开了一种苯并呋喃衍生物2-乙基(溴甲基)-4-羟基苯并呋喃-6-羧酸乙酯的制备方法,以5-甲基呋喃-2-甲醛为起始原料,经过缩合、关环、水解、上溴反应得到目标产物,该化合物是重要的医药中间体。 The invention discloses a preparation method of a benzofuran derivative ethyl 2-ethyl (bromomethyl) -4-hydroxybenzofuran-6-carboxylate, starting from 5-methylfuran-2-carboxaldehyde The starting material, after condensation, ring closure, hydrolysis, bromination reaction of the target product, the compound is an important pharmaceutical intermediates.