Process for preparing cis-1,2-cyclohexanedimethanol by using sodium borohydride reduction system

The invention discloses a process for preparing cis-1,2-cyclohexanedimethanol by using a sodium borohydride reduction system. The process comprises the following steps: firstly, performing an esterification reaction on cis-1,2-cyclohexanedicarboxylic acid and alcohol under the action of a catalyst (1), wherein the reaction temperature is 25-120 DEG C and the reaction time is 1-30 hours; purifying a product after the reaction so as to obtain high-purity cis-1,2-cyclohexane dicarboxylic acid diester, wherein the yield is 89.6%, and the content of GC is 99.5%; under the action of a catalyst (II), reducing the cis-1,2-cyclohexane dicarboxylic acid diester by using sodium borohydride so as to prepare cis-1,2-cyclohexanedimethanol, wherein the reaction temperature is 25-100 DEG C and the reaction time is 1-24 hours; purifying a reaction product, thereby obtaining a high-purity cis-1,2-cyclohexanedimethanol product, wherein the yield is 87.5%, and the content of GC is 99.2%. According to the process, high-purity cis