由对硝基甲苯出发,通过与Na2Sx的氧化还原反应,制得对氨基苯甲醛,然后经过桑德迈尔反应,制得对氯苯甲醛,这一新合成路线的总收率达64%以上.探讨了影响对氨基苯甲醛和对氯苯甲醛产率的各种因素.该路线具有收率高、产品质量好、操作简便等优点.
p - chlorobenzaldehyde has been synthesized through the redox reaction of sodium polysulfide and p - nitro Loluene for synthesis of p - amino benzaldehyde and Sandmeyer reaction. The total yield was over 64%. Various factors affecting the yields of paminobenzaldehyde and p - chlorobenzaldehyde have been studied. In this new synthetic route,the yield is high, the quality of product is good and the operations are simple.