Remote asymmetric trifluoromethylation induced by chiral sulfinyl group: synthesis of enantiomerically pure 1-(2-naphthyl)-2,2,2-trifluoroethanol
作者:Hideki Sugimoto、Shuichi Nakamura、Yoshihiro Shibata、Norio Shibata、Takeshi Toru
DOI:10.1016/j.tetlet.2005.12.061
日期:2006.2
The reaction of 1-[(2,4,6-triisopropylphenyl)sulfinyl]-2-naphthaldehyde with (trifluoromethyl)trimethylsilane using tetramethylammonium fluoride gave trifluoromethylated compounds in high yield with high diastereoselectivity. Desilylation and subsequent recrystallization yielded the enantiomerically and diastereomerically pure trifluoroethanol, which afforded chiral 1-(2-naphthyl)-2,2,2-trifluoroethanol
使用四甲基氟化铵使1-[((2,4,6-三异丙基苯基)亚磺酰基] -2-萘醛与(三氟甲基)三甲基硅烷反应,以高收率和高非对映选择性得到三氟甲基化化合物。脱甲硅烷基化和随后的重结晶得到对映异构体和非对映异构体纯的三氟乙醇,在除去亚磺酰基后得到手性的1-(2-萘基)-2,2,2-三氟乙醇。