Perfluorinated, t-amino cyclic ethers are provided. Electrochemical fluorination of N,N-dialkyl carboxamides provides Class 1 compounds of one or a mixture of perfluorinated, N-alkyl, aliphatic-substituted, saturated 1,3-oxazolidine and perfluorinated, N-alkyl, aliphatic-substituted, saturated 1,3-oxazine. Class 2 compounds comprise one or a mixture of Class 1 compounds, as well as perfluorinated, aliphatic-substituted 2-dialkylaminotetrahydrofuran and perfluorinated, aliphatic-substituted 2-dialkylamino dihydropyran.
Routes from 1,1-cycloalkanedicarboxylic acids to geminal bis(polyfluoromethyl) substituted carbocycles
作者:Adam Wolniewicz、Wojciech Dmowski
DOI:10.1016/s0022-1139(01)00353-0
日期:2001.7
1-Fluoroformyl-1-1(trifluoromethyl)cycloalkanes (1), prepared by treatment of 1,1-cycloalkane-dicarboxylic acids with SF4, were efficiently reduced to 1-hydroxymethyl-1-(trifluoromethyl)-cycloalkanes (2). Routes for the conversion of alcohols 2 to 1-methyl-1-(trifluoromethyl) cycloalkanes (4), 1-fluoromethyl-1-(trifluoromethyl)cycloalkanes (6) and 1-difluoromethyl-1-(trifluoromethyl)cycloalkanes (8), via iodides 3, triflates 5 and aldehydes 7, respectively, were investigated. (C) 2001 Elsevier Science B.V. All rights reserved.