Total synthesis of 7,7-, 10,10-, and 13,13-difluoroarachidonic acids
作者:Pui Yan Kwok、Frank W. Muellner、Chien Kuang Chen、Josef Fried
DOI:10.1021/ja00246a027
日期:1987.6
Synthese a partir de la reaction d'(alcynyl trialkylsilyl) ethers avec le ([difluoro-4,4 iodo-4 butyne-2 yl] [perhydro pyrannyl-2]) ether en presence de butyl-lithium
在脱丁基锂的存在下,合成部分反应 d'(炔基三烷基甲硅烷基) 醚 avec le ([difluoro-4,4 iodo-4 butyne-2 yl] [perhydro pyrannyl-2]) 醚
Efficient synthesis of unsymmetrical S-(bromodifluoromethyl)diarylsulfonium salts for electrophilic bromodifluoromethylating reagents
A series of unsymmetrical S-(bromodifluoromethyl)diarylsulfonium salts 1 were readily synthesized by treatment of corresponding (bromodifluoromethyl)arylsulfoxides 2 and substituted benzenes 3 with triflic anhydride in moderate to good yields. The unsymmetrical sulfonium salts 1 with different aryl groups having electron-donating or electron-withdrawing substituents can be nicely constructed depending on the choice of 2 and 3. Bromodifluoromethylation of alkynes was evaluated by using the selected diarylsulfonium salts 1 to provide the desired bromodifluoromethylated alkynes in moderate to good yields.