Reduction of C-Cl bonds in 2,2-dichloro-1,1,2-trifluoroethyl trichloromethyl ether (I), 2-chloro-1,1,2-trifluoroethyl trichloromethyl ether (II), and 2,2-dichloro-1,1,2-trifluoroethyl dichloromethyl ether (III) with 2-propanol, 2-butanol, cyclohexanol, tetrahydrofurane, diethyl ether, and 1,3-dioxolane initiated photochemically and by radiation has been investigated. Beside the main reduction products - 2-chloro-1,1,2-difluoroethyl trichloromethyl ether (IV) and 2-chloro-1,1,2-difluoroethyl chloromethyl ether (V) - it was also possible to prove the formation of 1,2-dichloro-1,2-bis(2-chloro-1,1,2-trifluoroethoxy)ethane (VI), 1-chloro-1,2-bis(2-chloro-1,1,2-trifluoroethoxy)ethane (VII), and 1,2-dichloro-1,2-bis(2-chloro-1,1,2-trifluoroethoxy)ethene (VIII). The structure of products was confirmed by elemental analysis, MS, IR, 1H NMR and 19F NMR spectra and by GLC comparison of the elution times with those of standards. The relative reduction ability of the solvents used in the reduction rate order of C-Cl bonds in the compounds (CCl3 > CFCl2 > CHCl2 and CFClH) are given.
对2,2-二氯-1,1,2-三氟乙基三氯甲醚(I),2-氯-1,1,2-三氟乙基三氯甲醚(II)和2,2-二氯-1,1,2-三氟乙基二氯甲醚(III)进行了光化学和辐射引发的还原反应,使用的溶剂有2-丙醇、2-丁醇、环己醇、四氢呋喃、二乙醚和1,3-二氧兰。除了主要的还原产物-2-氯-1,1,2-二氟乙基三氯甲醚(IV)和2-氯-1,1,2-二氟乙基氯甲醚(V)外,还证实了1,2-二氯-1,2-双(2-氯-1,1,2-三氟乙氧基)乙烷(VI)、1-氯-1,2-双(2-氯-1,1,2-三氟乙氧基)乙烷(VII)和1,2-二氯-1,2-双(2-氯-1,1,2-三氟乙氧基)乙烯(VIII)的形成。通过元素分析、质谱、红外、1H NMR和19F NMR光谱以及与标准物质的GLC比较证实了产物的结构。给出了化合物中C-Cl键的还原速率顺序的溶剂的相对还原能力(CCl3> CFCl2> CHCl2和CFClH)。