114309-60-3Relevant academic research and scientific papers
Donor-free bis(trifluoromethyl)cadmium, (CF3)2Cd: a readily available low-temperature difluorocarbene source
Eujen, R.,Hoge, B.
, p. C51 - C54 (1995)
Donor-free bis(trifluoromethyl)cadmium, (CF3)2Cd, has been obtained at -40 deg C from diethylcadmium and CF3I in a quantitative yield.The Raman spectrum of (CF3)2Cd is reported.In the presence of non-coordinating solvents the highly reactive compound eliminates CF2 even below -5 deg C.Its feasibility as a low temperature difluorocarbene source has been demonstrated by difluorocyclopropenation reactions with some alkenes and alkynes as well as by insertion into metal-chlorine bonds.The NMR spectra of some CF2Cl- and CF3-containing arsanes are reported. - Keywords: Cadmium; Arsenic; Difluorocarbene; Trifluoromethyl
Gold Difluorocarbenoid Complexes: Spectroscopic and Chemical Profiling
Tskhovrebov, Alexander G.,Lingnau, Julia B.,Fürstner, Alois
supporting information, p. 8834 - 8838 (2019/05/28)
Gold carbenes of the general type [LAu=CR2]+ are sufficiently long-lived for spectroscopic inspection only if the substituents compensate for the largely missing stabilization of the carbene center by the [LAu]+ fragment. π-Donation by two fluorine substituents (R=F) is insufficient; rather, difluorocarbene complexes are so deprived in electron density that they sequester even “weakly coordinating” anions such as triflate or triflimide. This particular bonding situation translates into unmistakable carbenium ion chemistry upon reaction with stilbene as a model substrate.
Trimethylsilyl fluorosulfonyldifluoroacetate (TFDA): A new, highly efficient difluorocarbene reagent
Dolbier Jr., William R.,Tian, Feng,Duan, Jian-Xin,Li, An-Rong,Ait-Mohand, Samia,Bautista, Olivia,Buathong, Saiwan,Baker, J. Marshall,Crawford, Jen,Anselme, Pauline,Cai, Xiao Hong,Modzelewska, Aneta,Koroniak, Henryk,Battiste, Merle A.,Chen, Qing-Yun
, p. 459 - 469 (2007/10/03)
TFDA is readily prepared from the reaction of fluorosulfonyldifluoroacetic acid with trimethylsilyl chloride, and it is a very effective and efficient source of difluorocarbene for use in addition reactions to alkenes of a broad scope of reactivities. Acid-sensitive substrates may require an additional purification step involving treatment of the distilled TFDA with sufficient Et3N to remove the acid impurity. Other trialkylsilyl fluorosulfonyldifluoroacetates can also be prepared, and they have been found to have reactivities similar to TFDA. The triethyl derivative, TEFDA is more convenient to prepare in a pure state and has similar reactivity to TFDA. Thus, it may prove to be a superior reagent.
Fluoro Analoga of Cycloheptadiene Pheromones of Marine Brown Algae: Exceptionally Facile -Sigmatropic Rearrangement of a trans-Di(alkyl)-Substituted Geminal Difluorocyclopropane
Erbes, Petra,Boland, Wilhelm
, p. 766 - 772 (2007/10/02)
The 3,3-difluorocyclopropane-1,2-dicarbonyl compounds 9a and 9b are obtained by addition of difluorocarbene to methyl cinnamate or trans-stilbene followed by oxidative degradation of the phenyl rings(s) (Scheme 2).Compound 9b is a versatile building block
