Comparison of the Relative Reactivities of the Triisopropylsilyl Group With Two Fluorous Analogs
作者:Amador Garcia Sancho、Xiao Wang、Bin Sui、Dennis P. Curran
DOI:10.1002/adsc.200900061
日期:2009.5
11,11,11-heptadeca-fluoroundecyl)silyl [C(8)F(17)(CH(2))(n)Si(i-Pr)(2), where n = 2 or 3], of the standard triisopropylsilyl (TIPS) group are compared in the setting of alcohol protection. The fluorous silyl groups can be installed under standard conditions in comparable yields to the TIPS group, but the derived fluorous silyl ethers are more labile than TIPS ethers towards cleavage by both acids and
两种含氟类似物二异丙基(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-十七氟癸基)甲硅烷基和二异丙基的相对稳定性- (4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-十七氟十一烷基)甲硅烷基[C(8)F(17)(标准三异丙基甲硅烷基 (TIPS) 基团的 CH(2))(n)Si(i-Pr)(2),其中 n = 2 或 3],在酒精保护设置中进行比较。氟甲硅烷基团可以在标准条件下以与 TIPS 基团相当的产率安装,但衍生的氟甲硅烷基醚比 TIPS 醚更容易被酸和氟化物裂解。