Reaction of ?,?,?-trichloro- and ?,?,?,?-tetrachloroalkanes with alkali metal acylates in aprotic solvents
作者:N. V. Kruglova
DOI:10.1007/bf01184532
日期:1990.12
Polychloroalkanes and -alkenes R(CH2)nCl (R = CHCl2CH2, CCl2 = CH, n = 1, 3) in dipolar aprotic solvents - dimethylformamide (DMF), dimethylsulfoxide (DMSO), hexamethylphosphoramide (HMPA) - at 130-150-degrees-C react selectively at the CH2Cl group with salts of carboxylic acids R'CO2K(Na) to form dichloroesters R'CO2. (CH2)nR (R = CHCl2CH2, CCl2 = CH). In tetrachloroalkanes CCl3CH2(CH2)nCl (n = 1, 3, 5) under the same conditions the selectivity of the CCl3 and CH2Cl groups relative to the nucleophile R'CO2K(Na) is altered - unsaturated esters R'CO2(CH2)nCH = CCl2 are formed in one stage with yields of 75-90%. Under the selected conditions, high conversion of polychloroalkanes to esters is attained 3 to 5 times more rapidly than in acid media. The structure of the ester obtained has been confirmed by their PMR spectra.
KRUGLOVA, N. V.;PETROVA, N. A.;FREJDLINA, R. X., ZH. OBSHCH. XIMII, 60,(1990) N, S. 1045-1049
作者:KRUGLOVA, N. V.、PETROVA, N. A.、FREJDLINA, R. X.
DOI:——
日期:——
KRUGLOVA, I. V., IZV. AN CCCP. CEP. XIM.,(1990) N2, S. 2790-2793
作者:KRUGLOVA, I. V.
DOI:——
日期:——
US4356295A
申请人:——
公开号:US4356295A
公开(公告)日:1982-10-26
Kruglova, N. V.; Petrova, N. A.; Freidlina, R. Kh., Journal of general chemistry of the USSR, 1990, vol. 60, # 5, p. 922 - 926
作者:Kruglova, N. V.、Petrova, N. A.、Freidlina, R. Kh.