371-96-0Relevant articles and documents
3,3,3-Trifluoro-1-nitropropene as a Novel Trifluoromethyl-Containing Building Block
Iwata, Satoru,Ishiguro, Yoshiharu,Utsugi, Masatuka,Mitsuhashi, Keiryo,Tanaka, Kiyoshi
, p. 2432 - 2435 (1993)
Additions of various carbanion nucleophiles to 3,3,3-trifluoro-1-nitropropene (1) proceeded regiospecifically at the C-2 position of 1 to give the corresponding adducts.The nitro group of the adducts, derived from the reactions with acetylacetone and ethyl acetoacetate, was reduced to the corresponding amines, which were cyclized in situ to the 3-(trifluoromethyl)pyrrole derivatives.
Highly regio- and stereoselective 1,3-dipolar cycloaddition of stabilised azomethine ylides to 3,3,3-trihalogeno-1-nitropropenes: synthesis of trihalomethylated spiro[indoline-3,2′-pyrrolidin]-2-ones and spiro[indoline-3,3′-pyrrolizin]-2-ones
Barkov, Alexey Yu.,Zimnitskiy, Nikolay S.,Korotaev, Vladislav Yu.,Kutyashev, Igor B.,Moshkin, Vladimir S.,Sosnovskikh, Vyacheslav Ya.
, p. 6825 - 6836 (2016)
Reactions of 3,3,3-trihalogen-1-nitropropenes with N-alkyl-α-amino acids (sarcosine, proline) and isatins proceed regio- and diastereoselectively to give a wide range of trihalomethylated spiro[indoline-3,2′-pyrrolidin]-2-ones and spiro[indoline-3,3′-pyrrolizin]-2-ones in good yields as a result of a 1,3-dipolar cycloaddition of the intermediate stabilised azomethine ylide at the double bond of the nitroalkenes.
Catalytic Asymmetric Construction of Tertiary Carbon Centers Featuring an α-Difluoromethyl Group with CF2H-CH2-NH2as the "building Block"
Gao, Fengyun,Guo, Yifei,Sun, Mengmeng,Wang, Yalan,Yang, Changyan,Wang, Yuqiang,Wang, Kairong,Yan, Wenjin
supporting information, p. 2584 - 2589 (2021/04/13)
We report here for the first time a novel difluoromethylated ketimine building block condensed by thioisatin and difluoroethylamine, offering efficient access to a broad range of enantioenriched products bearing difluoroethylamine units (27 examples, ≤98% yield, >99% ee) in the presence of quinine-derived squaramide. Further transformation of the intermediate would generate a variety of versatile functional blocks like α-difluoromethyl amines, β-amino acid, and β-diamine with retention of the enantiomeric excess at the difluoromethyl-bound carbon.
The asymmetric Friedel-Crafts reaction of indoles with fluoroalkylated nitroalkenes catalyzed by chiral phosphoric acid
Lin, Jin-Hong,Xiao, Ji-Chang
supporting information; experimental part, p. 4536 - 4539 (2011/10/09)
The enantioselective Friedel-Crafts fluoroalkylation of indoles with fluoroalkylated nitroalkenes, catalyzed by chiral phosphoric acid is described. The regioselectivity of fluoroalkylated nitroalkenes is a problem worth discussing, and it was found that the carbon atom adjacent to the fluoroalkyl group is more reactive than that adjacent to NO2 group.