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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。
The phase transfer catalyst is used for the reduction-oxidation of sodium polysulfide and p-nitrotoluene. The yield of p-aminobenzaldehyde (PAB) is over 90%. The PAB reaction solution was directly used for the synthesis of p-hydroxybenzaldehyde (PHB) without isolation. The yield was 90%. Various factors affecting the yield of PAB and PHB were examined.