1262850-20-3Relevant academic research and scientific papers
Catalytic Enantioselective Cyclopropenation of Internal Alkynes: Access to Difluoromethylated Three-Membered Carbocycles
Zhang, Zhi-Qi,Zheng, Meng-Meng,Xue, Xiao-Song,Marek, Ilan,Zhang, Fa-Guang,Ma, Jun-An
, p. 18191 - 18196 (2019)
Herein we described an efficient RhII-catalyzed enantioselective cyclopropenation reaction of internal alkynes with a masked difluorodiazoethane reagent (PhSO2CF2CHN2, Ps-DFA). This asymmetric transformation offers efficient access to a broad range of enantioenriched difluoromethylated cyclopropenes (40 examples, up to 99 % yield, 97 % ee). The synthetic utility of obtained strained carbocycles is demonstrated by subsequent stereodefined processes, including cross-couplings, hydrogenation, Diels–Alder reaction, and Pauson–Khand reaction.
Cu(I)-Catalyzed gem-Aminoalkynylation of Diazo Compounds: Synthesis of Fluorinated Propargylic Amines
Pisella, Guillaume,Ramirez, Nieves P.,Waser, Jerome
, p. 10928 - 10938 (2021/07/31)
The gem-aminoalkynylation of fluorinated diazo compounds catalyzed by a simple Cu(I) salt is described. This three-component reaction allows the synthesis of propargylic amines with broad functional group tolerance. Both electron-rich and electron-poor an
Synthesis method of 1, 1-difluoro-2-isonitrile-ethyl phenyl sulfone compound
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, (2020/03/06)
The invention discloses a synthesis method of a 1, 1-difluoro-2-isonitrile-ethyl phenyl sulfone compound. The synthesis method is characterized in that the 1, 1-difluoro-2-isonitrile-ethyl phenyl sulfone compound is synthesized from a 2, 2-difluoro-2-(thi
Non-catalytic conversion of C-F bonds of gem-difluoromethylene derivatives to C-H bonds with lithium aluminum hydride under room temperature
Wu, Jing-Jing,Cheng, Jian-Hang,Zhang, Jian,Shen, Li,Qian, Xu-Hong,Cao, Song
scheme or table, p. 285 - 288 (2011/02/28)
An unexpected hydrodefluorination of unactivated aliphatic C-F bonds of CF2 derivatives with LiAlH4 at room temperature without any added metal catalyst was reported. Deuterium-labeling experiments suggested that the hydrogens introduced into the products originated from LiAlH 4. Copyright
Novel synthesis of difluoromethyl-containing 1,4-disubstituted 1,2,3-triazoles via a click-multicomponent reaction and desulfanylation strategy
Zhang, Jian,Wu, Jingjing,Shen, Li,Jin, Guanyi,Cao, Song
experimental part, p. 580 - 584 (2011/04/23)
Fourteen difluoromethyl-containing 1,4-disubstituted 1,2,3-triazoles were synthesized via a novel copper-catalyzed click-multicomponent reaction of 2,2-difluoro-2-phenylsulfanylethanol, sodium azide and terminal alkynes in the presence of N-(p-toluenesulf
