Methyl hypofluorite (MeOF) reactions with various fluoroolefins
作者:Tetsuya Suzuta、Takashi Abe、Akira Sekiya
DOI:10.1016/s0022-1139(02)00163-x
日期:2003.1
The reaction of methyl hypofluorite (MeOF) with certain fluoroolefins, such as CF2CF2, CF2CFCF3, CF2CFOCF3, CF2CFOMe, CF2CClF, CF2CHF, CF2CH2, CHFCH2, CF2CFCFCF2, occurred in CD3CN or in the presence of NaF. Using neat MeOF in the presence of NaF was a novel method and gave good results. We observed that when more than three fluorine atoms are bonded to the CC double bond, the addition products
work up process, the product was easily separated from the reagent. Thus, the reaction would be a practical preparation method for polyfluorinated esters. Trifluoromethyl chlorodifluoroacetate was obtained by the reaction of 1,2-dichlorotrifluoroethyltrifluoromethyl ether with fuming sulfuric acid in 49% yield.
该研究的重点是使用多孔氟化铝(PAF)或MF n / PAF将氯氟醚脱氟为相应的酯。在后处理过程中,产品很容易与试剂分离。因此,该反应将是用于多氟化酯的实用制备方法。通过使1,2-二氯三氟乙基三氟甲基醚与发烟硫酸反应,以49%的收率得到三氟氯二氟乙酸甲酯。
Fluorination of chlorofluoroether using catalysts supported by porous aluminum fluoride
Reaction of 1,2-dichloro-1,1,2-trifluoro-2-methoxyethane with anhydrous hydrogen fluoride (AHF) was investigated in the presence of metal fluorides supported on porous aluminumfluoride (PAF). 2-Chloro-1,1,2,2-tetrafluoro-2-methoxyethane, a new compound, was prepared in 85% yield in the presence of CoF2/PAF. Methyl chlorodifluoroacetate was also obtained and its formation was discussed.