研究了1-肼基-2,3-二氮杂萘盐酸盐的合成新方法.以相对廉价易得的邻苯二甲酸酐为起始原料,依次通过还原、溴代、环合、取代、酸化等反应步骤得到目标产物1-肼基-2,3-二氮杂萘盐酸盐.研究表明该方法具有原料便宜易得、收率高、产物易分离纯化、后处理操作简单、总成本低等优点. A new method for the synthesis of 1-hydrazino-phthalazin hydrochloride was studied.A relatively cheap and readily available phthalic anhydride was used as the starting material, followed by reduction, bromination, cyclization and substitution , Acidification and other reaction steps to get the target product 1-hydrazino-phthalazine hydrochloride.Studies show that the method has the advantages of cheap and easy to get raw materials, high yield, easy separation and purification, simple post-treatment, total Low cost and so on.