中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
对甲苯磺酸甲酯 | methyl p-toluene sulfonate | 80-48-8 | C8H10O3S | 186.232 |
Steroidal 3-fluoroderivatives were prepared from corresponding tosylates using tetrabutylammonium difluorodimethylphenylsilicate as fluorinating agent. The reaction was tested on all four possible C-3 and C-5 stereoisomers of cholestane and 17-oxoandrostane skeletons. In this reaction only one isomer was always formed with opposite configuration at C-3 to starting tosylate. The reaction is accompanied by elimination which affords a mixture of corresponding olefines.