Novel synthesis of 2,2,2-trifluoroethyl compounds from homoallylic alcohols: a copper(<scp>I</scp>) iodide-initiated trifluoromethyl–dehydroxylation process
作者:Jian-Xing Duan、Qing-Yun Chen
DOI:10.1039/p19940000725
日期:——
Benzyl, prop-2-ynyl and allyl chlorodifluoroacetates 3a, bromodifluoroacetates 3b or fluorosulfonyl-difluoroacetates 3c, when decomposed in the presence of 1 equivalent of copper(I) iodide at an appropriate temperature in dimethylformamide, gave the corresponding trifluoromethyl derivatives in good to excellent yields. The products can also be obtained directly by ester exchange of XCF2CO2Et (X = FSO2, Cl, Br) 6 and the corresponding alcohols in the presence of KF and Cul. A trifluoromethylation-dehydroxylation mechanism, initiated by Cul, is proposed.
A facile, general route to perfluoroalkyl allenes
作者:Donald J. Burton、Greg A. Hartgraves、Jeffrey Hsu
DOI:10.1016/s0040-4039(00)97448-3
日期:——
Bouillon, Jean-Philippe; Maliverney, Christian; Merenyi, Robert, Journal of the Chemical Society. Perkin transactions I, 1991, # 9, p. 2147 - 2149
作者:Bouillon, Jean-Philippe、Maliverney, Christian、Merenyi, Robert、Viehe, Heinz G.
DOI:——
日期:——
Haszeldine et al., Journal of the Chemical Society, 1954, p. 2040
作者:Haszeldine et al.
DOI:——
日期:——
Synthesis of Trifluoromethyl-allenes by Gold-Catalyzed Rearrangement of Propargyl Benzyl Ethers
作者:Arnaud Boreux、Geoffroy H. Lonca、Olivier Riant、Fabien Gagosz
DOI:10.1021/acs.orglett.6b02636
日期:2016.10.7
A new method for the synthesis of trifluoromethyl-allenes from easily accessible α-trifluoromethyl-propargyl benzylether derivatives following a gold-catalyzed intramolecular hydride transfer has been developed. Various di- and trisubstituted trifluoromethyl-allenes were obtained in good to excellent yields.