Synthesis of alkyl perfluoroalkyl ketones reactions of allyl perfluoroalkanoates with acyl chlorides in the presence of palladium(0)
作者:Qing-Yun Chen、Jian-Guo Chen
DOI:10.1016/s0022-1139(00)83929-9
日期:1989.3
The reactions of fluorocarbanions derived from palladium(0) mediated decomposition of allyl esters of fluoroalkylether acids, RfCO2CH2CH=CH2(Rf=C3F7O[CF(CF3CF2O]nCF(CF3), n=0,1), with acyl chlorides yielded enol esters of hemifluorinated ketones, RR′C=C(Rf)OCOCHRR′, n=0, 4; n=1, 5, plus a very small amount of the ketones RfCOCHRR′, n=0, 6; n=1, 7, or allyl ketones, RfCOCHRCH2CH=CH2, 8, with a small
钯(0)衍生的氟碳阴离子的反应介导了氟烷基醚酸的烯丙基酯的分解,R f CO 2 CH 2 CH = CH 2(R f = C 3 F 7 O [CF(CF 3 CF 2 O] n CF( CF 3),n = 0,1),用酰氯生成半氟化酮的烯醇酯,RR'C = C(R f)OCOCHRR',n = 0,4; n = 1,5,加非常少量作为酮类, - [R ˚F COCHRR',n = 0时,6; n = 1时,如图7所示,或烯丙基酮,R ˚F COCHRCH 2 CH = CH 2,图8,与二烯丙基酮少量,R˚F COCR(CH 2 CH = CH 2)2,图9,这取决于所采用的反应条件。用浓硫酸可以将酯4、5以优异的产率转化为酮6、7。