作者:Donald A. Wiebe、Donald J. Burton
DOI:10.1016/j.jfluchem.2012.03.013
日期:2012.7
2-Hydroaldehydes, RfCH(R)CHO, where Rf = CF3, C2F5, n-C3F7 and R = CF3, C2F5, n-C3F7, Ph, H, were prepared via acid hydrolysis of the corresponding vinyl ethers, RfC(R) = CHOCH3, which can be readily prepared by reaction of [Ph3P+C¯HOCH3] with the corresponding ketone. The 2-hydroaldehydes can be chemoselectively converted to the acyl halide, RfCH(R)C(O)X (X = Cl, Br), via free-radical halogenation
2-羟基醛,R f CH(R)CHO,其中R f = CF 3,C 2 F 5,n -C 3 F 7和R = CF 3,C 2 F 5,n -C 3 F 7,Ph, H,制备通过相应的乙烯基醚的酸水解,R ˚F C(R)= CHOCH 3,其可通过的反应容易地制备[博士3P+C¯霍奇3]与相应的酮。可以通过自由基卤化将2-氢醛化学选择性转化为酰基卤R f CH(R)C(O)X(X = Cl,Br)。全氟烷基使2-位失活,成为2-氢的自由基夺取基团,卤化仅发生在甲酰基氢上。但是,冰乙酸中的2-氢醛的卤代化学选择性地产生了2-卤醛,R f CX(CHO)CHO,X = Cl,Br。2-氢全氟酰基卤的水解提供了有用的途径来获得2-氢全氟烷基支链的羧酸,有用的乙烯酮前体。该途径避免了使用有毒的氟代烯烃,例如全氟异丁烯。