Trifluoromethanesulfonic anhydride CAS:358-23-6

N-Trifluoromethanesulfonic anhydride (Tf2O) e khetholloa ka sebopeho sa eona sa limolek'hule, se nang le lihlopha tse peli tsa trifluoromethanesulfonyl (-CF3SO2) tse hokahantsoeng ke athomo ea oksijene. Sebopeho sena se fa Tf2O ts'ebetso e ikhethang le botsitso, e leng se etsang hore e be reagent e ratoang liphetohong tse thata tsa maiketsetso. Tf2O hangata e sebetsoa e le mokelikeli o hlakileng, o se nang 'mala o nang le ntlha e phahameng ea ho belisa 'me e bontša ho qhibiliha ho matla litharollong tsa tlhaho tse kang dichloromethane le chloroform. Ho tsitsa ha eona tlas'a maemo a fapaneng, hammoho le asiti ea eona e matla, ho ntlafatsa ts'ebeliso ea eona lits'ebetsong tse rarahaneng tsa tlhaho tse hlokang taolo e nepahetseng maemong a karabelo. E Sebelisa Ts'ebetso ea Organic: Tf2O e sebetsa e le reagent e feto-fetohang ts'ebetsong ea organic, haholo-holo liketsong tse hlokang ts'ebetso e matla ea electrophilic. E sebelisoa hangata ho acylation ea alcohols, amines, le phenols ho theha li-ester, amide, le sulfonamides, ka ho latellana. Bokhoni bona bo bohlokoa bakeng sa nts'etsopele ea li-intermediate tsa meriana, lik'hemik'hale tsa temo le thepa e tsoetseng pele e nang le thepa e etselitsoeng eona. Khemistri ea Polymer: Mekhoa ea ho etsa polymerization, Tf2O e thusa ho fetola liketane tsa polymer ka liketso tsa sulfonation, ho ntlafatsa ho qhibiliha ha polymer, botsitso le ts'ebetso. Bokhoni ba eona ba ho hlahisa lihlopha tsa sulfonic acid bo ntlafatsa ts'ebetso ea polymer lits'ebetsong tse fapaneng tsa indasteri, ho kenyeletsoa le liphahlo, lera le li-resin tsa phapanyetsano ea ion. Lik'hemik'hale tse Ntle: Tf2O e fumana ts'ebeliso tlhahisong ea lik'hemik'hale tse ntle joalo ka lidae, li-intermediate tsa meriana, le li-reagent tse ikhethang. Ho sebetsa ha eona ka mokhoa o ikhethileng ho nolofalletsa ts'ebetso e nepahetseng ea limolek'hule tsa tlhaho, tsa bohlokoa bakeng sa ho ntlafatsa ts'ebetso ea baeloji le botsitso ba lik'hemik'hale lihlahisoa tsa ho qetela. Tlhahiso Trifluoromethanesulfonic anhydride e hlahisoa ka karabelo ea trifluoromethanesulfonic acid (TfOH) ka acetic anhydride. Ts'ebetso ena e kenyelletsa ho eketsoa ha acetic anhydride ho TfOH tlas'a maemo a sa nang le metsi, e leng se lebisang ho thehoeng ha Tf2O le acetic acid e le sehlahisoa se latelang. Hangata karabelo e hloka taolo e hlokolosi ea mocheso le sepakapaka se sa sebetseng ho thibela liketso tse sa batleheng tse ka thoko le ho netefatsa chai e phahameng ea Tf2O. Mekhoa ea ho hloekisa e kang ho qhibilihisa kapa ho ntša solvent e sebelisoa ho arola Tf2O ka bohloeki bo phahameng bo loketseng lits'ebetso tsa indasteri. Ka bokhutšoanyane, trifluoromethanesulfonic anhydride ke reagent e feto-fetohang le e matla e sebelisoang haholo tlhahisong ea lintho tse phelang, k'hemistri ea polymer, le tlhahiso ea lik'hemik'hale tse ntle. Ho sebetsa ha eona ka matla, botsitso le bokhoni ba ho khetha ts'ebetso ho etsa hore e be ea bohlokoa haholo ho ntšetseng pele mahlale a theknoloji mafapheng a fapaneng a indasteri le mafapheng a saense. Ho kopanya ho laoloang le ts'ebeliso e nepahetseng ea Tf2O ho kenya letsoho haholo ntlafatsong ea lisebelisoa tse ncha le metsoako e nang le ts'ebetso e ntlafalitsoeng le ts'ebetso.