A general route for the synthesis of β,β-difluorocarboxylic acids
作者:Or Cohen、Shlomo Rozen
DOI:10.1016/j.tet.2008.03.018
日期:2008.5
A new method for the preparation of β,β-difluoro- (and other gem-difluoro) acids has been developed. It is based on the fact that 3-oxocarboxylic esters are easy to make and convert to the corresponding dithiane derivatives. These dithianes reacted with BrF3, a commercial, but rarely used reagent in organic chemistry, under very mild conditions to form the corresponding difluoroesters, which in turn
Il'chenko,A.Ya. et al., Journal of Organic Chemistry USSR (English Translation), 1972, vol. 8, p. 1768 - 1773
作者:Il'chenko,A.Ya. et al.
DOI:——
日期:——
BLOSHCHITSA F. A.; BURMAKOV A. I.; KUNSHENKO B. V.; ALEKSEEVA L. A.; BELF+, ZH. ORGAN. XIMII, 1981, 17, HO 7, 1417-1420
作者:BLOSHCHITSA F. A.、 BURMAKOV A. I.、 KUNSHENKO B. V.、 ALEKSEEVA L. A.、 BELF+
DOI:——
日期:——
Semi-Industrial Fluorination of β-Keto Esters with SF4: Safety vs Efficacy
作者:Serhii A. Trofymchuk、Denys V. Kliukovskyi、Sergey V. Semenov、Andrii R. Khairulin、Valerii O. Shevchenko、Maksym Y. Bugera、Karen V. Tarasenko、Dmitriy M. Volochnyuk、Sergey V. Ryabukhin
DOI:10.1055/s-0037-1610744
日期:2020.4
deoxofluorination of β-keto esters using SF4 was investigated. The scope and limitation of the reaction were determined. The efficient method for the synthesis of β,β-difluorocarboxylic acids was elaborated based on the reaction. The set of mentioned acids, being the perspective building blocks for medicinal chemistry, were synthesized on multigram scale. The safety of SF4 use was discussed. The described