Anodic desulfurization of dithioacetals of ketones in the presence of Et3N·3HF provided the corresponding gem-difluorocompounds while dithioacetals of aromatic and aliphatic aldehydes gave gem-difluoro thioethers and monofluoro thioether, respectively.
Electrolytic partial fluorination of organic compounds. 20. Electrosynthesis of novel hypervalent iodobenzene chlorofluoride derivatives and its application to indirect anodic gem-difluorination
作者:Toshiyasu Fujita、Toshio Fuchigami
DOI:10.1016/0040-4039(96)00951-3
日期:1996.7
Electrosynthesis of novelhypervalentiodobenzenechlorofluorides was successfully performed for the first time and it was demonstrated that p-methoxyiodobenzene chlorofluoride could be used as a mediator for indirectanodicgem-difluorination of dithioacetals.
gem-Difluorination of 2,2-diaryl-1,3-dithiolanes by Selectfluor<sup>®</sup>and pyridinium polyhydrogen fluoride
作者:V. Prakash Reddy、Ramesh Alleti、Meher K. Perambuduru、Urs Welz-Biermann、Herwig Buchholz、G. K. Surya Prakash
DOI:10.1039/b414254c
日期:——
2,2-diaryl-1,3-dithiolanes, readily obtainable from diaryl ketones, were transformed into the corresponding gem-difluoro compounds using a novel reagent combination involving Selectfluor and pyridiniumpolyhydrogenfluoride (PPHF) under mild conditions in moderate to good yields.
Polyarylene, Process For Producing The Same, Solid Polyelectrolyte, And Proton-Conductive Film
申请人:Yamakawa Yoshitaka
公开号:US20080015389A1
公开(公告)日:2008-01-17
A polyarylene having a structural unit shown by the following formula (1) is disclosed.
wherein X and Y indicate a divalent organic group or a single bond, Z shows an oxygen atom or a sulfur atom, R represents at least one atom or group selected from the group consisting of a hydrogen atom, a fluorine atom, an alkyl group, and a fluorine-substituted alkyl group, a is an integer of 1 to 20, n is an integer of 1 to 5, and p is an integer of 1 to 10.
The electrochemical fluorination of organosulfur compounds in triethylamine/hydrofluoric acid (Et3N-5 HF) with polystyrene-supported iodobenzene (PSIB) and tetraethylammonium chloride (Et4NCl) was performed successfully in an undivided cell under constant current conditions to afford the corresponding fluorinated compounds in moderate to good yields. Recycle use of the PSIB could be achieved due to