2，5－二甲氧基对苯乙炔前聚物单体的合成

The Synthesis of the Monomer of Prepolymer for 2, 5-Dimethoxy -p-Phenylene Vinylene

以对苯二酚为基本原料，通过甲氧基化、氯甲基化、锍化三个反应合成得到了单体双锍盐且产率达８４％，并运用色谱／质谱联用仪和核磁共振仪对每步产物进行了表征．

Poly (2, 5-Dimethoxy-p-Phenylene Vinylene) is an important third-order non-linear optic polymer and can be synthesized mainly by Wessling' S method. With this method, the monomer must be obtained before the synthesis of prepolymer under the initiation of bases. The highest yield of the monomer reported is 70 %, while that by the authors is 84 % through methoxylation,chloromethylation and sulphonization from p-biphenol.The synthesized products in each step are proved by a GC/MS system and HNMR.