环己烷-1,3-二酮与TsCl / Et 3 N的反应,然后在MeCN中用芳基或烷基硫醇和K 2 CO 3处理所得的3-(甲苯磺酰氧基)环己-2-烯-1-酮(芳基硫烷基)环己-2-烯-1-酮或3-(烷基硫基)环己-2-烯-1-酮。通过在MeCN中使用NBS,这些化合物很容易在C-2处溴化;暴露于DBU在MeCN在室温下然后使得芳构化,得到的元-arylsulfanyl-和元- (烷硫基)苯酚。
环己烷-1,3-二酮与TsCl / Et 3 N的反应,然后在MeCN中用芳基或烷基硫醇和K 2 CO 3处理所得的3-(甲苯磺酰氧基)环己-2-烯-1-酮(芳基硫烷基)环己-2-烯-1-酮或3-(烷基硫基)环己-2-烯-1-酮。通过在MeCN中使用NBS,这些化合物很容易在C-2处溴化;暴露于DBU在MeCN在室温下然后使得芳构化,得到的元-arylsulfanyl-和元- (烷硫基)苯酚。
CuI/L-Proline-Catalyzed Synthesis of Vinyl Sulfides in 95% Alcohol
作者:Sheng-Rong Guo、Yan-Qin Yuan
DOI:10.1080/00397910802222746
日期:2008.8.19
A method for the synthesis of vinyl sulfides using the simple CuI/L-proline as a catalyst system is reported. The best yields were obtained in the 95% ethanol with 10mol% CuI, 20mol% L-proline, and 1.2 equiv of K2CO3. The amino acids act as base and excellent promoter for the copper-catalyzed coupling reactions, and this protocol tolerates both aromatic and heterocyclic thiols and avoids using other expensive additives.