对硝基甲苯合成对氨基-和对羟基苯申醛

PREPARATION OF p-AMINOBENZALDEHYDE AND p-HYDROXYBENZALDEHYDE FROM p-NITROTOLUENE

将相转移催化剂用于多硫化钠与对硝基甲苯的还原-氧化反应,合成对氨基苯甲醛(PAB)产率达90%以上。PAB反应液不经分离直接用于合成对羟基苯甲醛(PHB),产率达90%。考察了影响PAB和PHB产率的各种因素。

Phase transfer catalysis has been applied to the redox reactionof sodium polysulfide and p-nitrotoluene for synthesis of p-aminobenzaldegyde(PAB).The yield of PAB was over 90%.The reaction solution of PAB could be subje-cted directly to synthesize p-hydroxybenzaldehyde(PHB)and resulted 90%yieldof PHB.Various factors affecting the yields of PAB and PHB have been studied.