A convenient srn1 synthesis of aromatic nitriles from diazonium salts diazosulfides
作者:Giovanni Petrillo、Marino Novi、Giacomo Garbarino、Carlo Dell'erba
DOI:10.1016/s0040-4020(01)86905-2
日期:1987.1
Properly substituted diazosulfides XC6H4-N=N-SPh () (either isolated or generated from arenediazonium tetrafluoroborates and sodium benzenethiolate) react with tetrabutylammonium cyanide, in Me2SO under photon or electron stimulation, leading to nitriles XC6H4CN (). Satisfactory yields of , comparable with those of the Sandmeyer reaction, are obtained when X = 3- or 4-CF3 , 2-, 3-, or 4-CN, 4-F, 4-MeO
适当取代的重氮硫化物XC 6 H 4 -N = N-SPh()(由四氟硼酸芳族重氮鎓和苯硫代硫酸钠分离或产生)在光子或电子刺激下在Me 2 SO中与氰化四丁基铵反应,生成腈XC 6 H 4 CN ()。的令人满意的产率,与那些Sandmeyer反应的可比性,获得当X = 3或4-CF 3,2-,3-,或4-CN,4-F,4-的MeO,3-梅科,4- NO 2,4-PhCO和4- PhSO 2。由于不同的原因,当X = H,4-MeO,2-或3-NO 2时,该反应实际上无法作为有用的腈合成反应。收集到的证据与S RN 1机制的干预非常吻合,重氮化合物由于易于还原并随后迅速断裂CN和NS键而成为重参与反应的底物。所涉及的机理的重要结果是溴代和氯代衍生物(:X = Br,Cl)的行为,它们通过同时引入两个氰基官能团,导致相应二氰基苯的收率令人满意。