101906-05-2Relevant articles and documents
Nucleophilic addition of (difluoromethyl)trimethylsilane to selected α-imino ketones and aryl diketones
Obijalska, Emilia,Utecht, Greta,Kowalski, Marcin K.,Mlostoń, Grzegorz,Rachwalski, Micha?
, p. 4701 - 4703 (2015)
Abstract Chemoselective addition of (difluoromethyl)trimethylsilane (CHF2SiMe3) to the carbonyl bond of aryl glyoxal derived α-imino ketones, and selected diaryl 1,2-diketones were studied in the presence of initiators, such as potas
Chemoselective trifluoromethylation of the C=N group of α-iminoketones derived from arylglyoxals
Obijalska, Emilia,Kowalski, Marcin K.,Mlostoń, Grzegorz,Linden, Anthony,Heimgartner, Heinz
, p. 151 - 157 (2014)
Chemoselective addition of (trifluoromethyl)trimethylsilane to the CN group of N-(tert-butyl)-α-iminoketones in the presence of a fluoride ion as a catalyst was achieved under acidic conditions. Subsequent diastereoselective reductions of the obtained α-a
Regioselective N-1 and C-2 diacylation of 3-substituted indoles with arylglyoxal hydrates for the synthesis of indolyl diketones
Pan, Dalong,Chu, Jinpeng,Gao, Xianrui,Wang, Cuiping,Meng, Qingtao,Chi, Haijun,Dong, Yan,Duan, Chunying,Zhang, Zhiqiang
supporting information, p. 6998 - 7003 (2018/10/17)
A highly regioselective N-1 and C-2 diacylation of 3-substituted indoles with arylglyoxal hydrates to afford N-1 and C-2 indolyl diketones in moderate to good yields is described. Notably, the control of regioselectivity is achieved by small changes in the Cu catalyst, additive and solvent. Importantly, the intermediates for N-1 and C-2 diacylation were detected and two plausible pathways were also proposed.
Catalytic asymmetric Meerwein-Ponndorf-Verley reduction of glyoxylates induced by a chiral N,N′-dioxide/Y(OTf)3 complex
Wu, Wangbin,Zou, Sijia,Lin, Lili,Ji, Jie,Zhang, Yuheng,Ma, Baiwei,Liu, Xiaohua,Feng, Xiaoming
supporting information, p. 3232 - 3235 (2017/03/20)
An asymmetric Meerwein-Ponndorf-Verley (MPV) reduction of glyoxylates was for the first time accomplished via an N,N′-dioxide/Y(OTf)3 complex with aluminium alkoxide and molecular sieves (MSs) as crucial additives. A variety of optically active α-hydroxyesters were obtained with excellent results. A possible reaction mechanism was proposed based on the experiments.
Naphthol synthesis: Annulation of nitrones with alkynes: Via rhodium(III)-catalyzed C-H activation
Wang, Qiang,Xu, Youwei,Yang, Xifa,Li, Yunyun,Li, Xingwei
supporting information, p. 9640 - 9643 (2017/09/01)
An efficient and redox-neutral naphthol synthesis has been realized via rhodium(iii) catalyzed C-H activation of α-carbonyl nitrones and annulation with alkynes, where the nitrone group functioned as a traceless directing group.
A highly efficient and enantioselective intramolecular cannizzaro reaction under TOX/Cu(II) catalysis
Wang, Pan,Tao, Wen-Jie,Sun, Xiu-Li,Liao, Saihu,Tang, Yong
supporting information, p. 16849 - 16852 (2013/12/04)
An asymmetric intramolecular Cannizzaro reaction of aryl and alkyl glyoxals with alcohols has been realized with an unprecedented high level of enantioselectivity, on the basis of a newly developed congested TOX ligand and a gradual liberation protocol of active glyoxals from glyoxal monohydrates. Preliminary results suggested a mechanism of enantioselective addition of alcohols to glyoxals contributing most to the stereoselectivity, other than by the dynamic kinetic resolution of hemiacetal intermediates.
Reactions of α-imino ketones derived from arylglyoxals with (trifluoromethyl)trimethylsilane; A new route to β-amino-α- trifluoromethyl alcohols
Mloston, Grzegorz,Obijalska, Emilia,Tafelska-Kaczmarek, Agnieszka,Zaidlewicz, Marek
scheme or table, p. 1289 - 1296 (2011/02/22)
The reactions of α-imino ketones, derived from arylglyoxals, with (trifluoromethyl)trimethylsilane (CF3SiMe3) in DME solution, in the presence of catalytic amount of CsF, at room temperature, yield O-silylated β-imino alcohols in the
