Improved synthesis of trifluoromethyl sulfones used as intermediates for the preparation of di- or tri-substituted olefins
作者:Fabrice Eugene、Bernard Langlois、Eliane Laurent
DOI:10.1016/0022-1139(93)02909-x
日期:1994.3
Primary and secondary trifluoromethyl sulfones (triflones) are efficiently obtained from easily available sodium trifluoromethanesulfinate (triflinate) and alkyl bromides in N,N-dimethylacetamide. This technique is more powerful than the potassium triflinate/acetonitrile system. Ethyl aconitate can be also produced in one step from ethyl bromoacetate and diisopropylethylamine, sodium triflinate being
Esterification of trans-aconitic acid improves its anti-inflammatory activity in LPS-induced acute arthritis
作者:Diego Pinto de Oliveira、Thales do Valle Moreira、Nathália Vieira Batista、José Dias de Souza Filho、Flávio Almeida Amaral、Mauro Martins Teixeira、Rodrigo Maia de Pádua、Fernão Castro Braga
DOI:10.1016/j.biopha.2018.01.009
日期:2018.3
tricarboxylic acid. We herein report the synthesis of TAA estersvia Fischer esterification with ethanol, butanol and octanol. The reaction kinetics was investigated to produce mono-, di- and tri- derivatives. Mono- and diesters of TAA were obtained as a mixture of positional isomers, whereas the triesters were recovered as pure compounds. The obtained esters were screened in a model of acute arthritis