Efficient synthesis of 5-substituted-3-pyridazine carbonitrile via regioselective Reissert-type reaction
作者:Shengqiang Wang、Zhiyue Geng、Ruiyun Guo、Jingya Li、Dapeng Zou、Yangjie Wu、Yusheng Wu
DOI:10.1016/j.tetlet.2016.05.037
日期:2016.7
Various 5-substituted-3-pyridazine carbonitrile derivatives were synthesized by regioselective Reissert-type reaction with 4-substituted pyridazine, 4-methylbenzene-1-sulfonyl chloride and trimethylsilyl cyanide. The reaction can be carried out under conditions of AlCl3 as catalyst, THF as solvent at 10 degrees C, followed by treatment with DBU which gave moderate yields and good regioselectivity. (C) 2016 Elsevier Ltd. All rights reserved.