[EN] FLUORINATION PROCESS<br/>[FR] PROCÉDÉ DE FLUORATION
申请人:SOLVAY
公开号:WO2015000935A1
公开(公告)日:2015-01-08
It has been found that a compound of formula (I) R-CF2-O-Ar, wherein R is a fluorinated alkyl group or an optionally substituted aromatic or heteroaromatic group and Ar is an optionally substituted aromatic or heteroaromatic group, can be produced by a process comprising a step of reacting a compound of formula (II) R-C(O)-O-Ar wherein R and Ar are as defined above with a fluorination agent at a temperature of below +100°C.
Chloro-aromatic compounds of the formula
wherein R is CF3, OCF3, OC2F5, CN, NCO, or COCI, m is 0, 1 or 2; n is 0, 1 or 2; and q is 1 or 2; q + m + n is less than 6; are prepared by the vapor phase chloro-denitration reaction of a chlorinating agent with a nitro-aromatic compound of the formula
where R, m, n and q are as defined above.
式中的氯芳烃化合物
式中 R 为 CF3、OCF3、OC2F5、CN、NCO 或 COCI,m 为 0、1 或 2,n 为 0、1 或 2,q 为 1 或 2,q + m + n 小于 6;通过氯化剂与式中硝基芳香族化合物的气相氯代二硝化反应制备。
其中 R、m、n 和 q 如上定义。
2-Trifluoromethyl-1,3-dithianylium triflate: a convenient ‘masked’ electrophilic pentafluoroethylation reagent
作者:Dmitri V. Sevenard、Peer Kirsch、Enno Lork、Gerd-Volker Röschenthaler
DOI:10.1016/s0040-4039(03)01478-3
日期:2003.8
With 2-trifluoromethyl-1,3-dithianylium triflate for the first time the synthesis, isolation and full structural characterization of an alpha-perfluoroalkylcarbenium salt was achieved. The title compound can be easily obtained on a preparative scale. The thermally stable dithianylium salt in combination with fluorodesulfurization chemistry is a promising novel reagent for the electrophilic polyfluoroalkylation of organic substrates, demonstrated by the pentafluoroethylation of O-nucleophiles. (C) 2003 Elsevier Ltd. All rights reserved.