24865-83-6Relevant academic research and scientific papers
A new preparation of cis-N-sulfonylaziridines from N-sulfonylaldimines using trimethylsilyldiazomethane
Hori,Aoyama,Shioiri
, p. 9455 - 9458 (2000)
Trimethylsilyldiazomethane smoothly reacts with N-sulfonylaldimines to give 2-substituted N-sulfonyl-3-trimethylsilylaziridines in good yields with high cis selectivity. (C) 2000 Elsevier Science Ltd.
Copper-boryl mediated transfer hydrogenation of N-sulfonyl imines using methanol as the hydrogen donor
He, Yi,Li, Shi-Guang,Mbaezue, Ifenna I.,Reddy, Angula C.S.,Tsantrizos, Youla S.
supporting information, (2021/03/24)
B2Pin2-assisted copper-catalyzed transfer hydrogenation of aromatic sulfonylimines has been achieved, delivering a variety of aryl/heteroaryl sulfonamides in good to excellent yields under mild reaction conditions and with methanol a
Methyltrioxorhenium/urea hydrogen peroxide catalyzed oxidation of N-sulfinyl imines: A mild and highly efficient access to N-sulfonyl aldimines, ketimines and α-ketiminoesters
Tan, Yu,Ma, Ru-Lin,Lin, Hua,Sun, Xing-Wen
supporting information, (2020/11/25)
A mild and highly efficient access to N-sulfonyl imines through the oxidation of corresponding N-tert-butylsulfinyl imines and N-p-tosyl-sulfinyl imines with UHP in the presence of catalytic amount MTO was developed. Under mild reaction conditions, this h
Asymmetric Stepwise Reductive Amination of Sulfonamides, Sulfamates, and a Phosphinamide by Nickel Catalysis
Zhao, Xiaohu,Xu, Haiyan,Huang, Xiaolei,Zhou, Jianrong Steve
supporting information, p. 292 - 296 (2018/12/13)
Asymmetric reductive amination of poorly nucleophilic sulfonamides was realized in the presence of nickel catalysts and titanium alkoxide. A wide range of ketones, including enolizable ketones and some biaryl ones, were converted into sulfonamides in excellent enantiomeric excess. The cyclization of sulfamates and intermolecular reductive amination of a diarylphosphinamide were also successful. Formic acid was used as a safe and economic surrogate of high-pressure hydrogen gas.
Catalyst-controlled regiodivergent ring-opening C(sp3)-Si bond-forming reactions of 2-arylaziridines with silylborane enabled by synergistic palladium/copper dual catalysis
Takeda, Youhei,Shibuta, Kaoru,Aoki, Shohei,Tohnai, Norimitsu,Minakata, Satoshi
, p. 8642 - 8647 (2019/10/02)
A catalyst-controlled regiodivergent and stereospecific ring-opening C(sp3)-Si cross-coupling of 2-arylaziridines with silylborane enabled by synergistic Pd/Cu dual catalysis has been developed. Just by selecting a suitable combination of catalysts, the regioselectivity of the coupling is completely switched to efficiently provide two regioisomers of β-silylamines (i.e., β-silyl-α-phenethylamines and β-silyl-β-phenethylamines) in good to high yields. Furthermore, a slight modification of the reaction conditions caused a drastic change in reaction pathways, leading to a tandem reaction to produce another regioisomer of silylamine (i.e., α-silyl-β-phenethylamines) in an efficient and selective manner.
Practical N-hydroxyphthalimide-mediated oxidation of sulfonamides to N-sulfonylimines
Wang, Jian,Yi, Wen-Jing
, (2019/11/02)
A new method to prepare sulfonylimines through the oxidation of sulfonamides mediated by N-hydroxyphthalimide under mild conditions has been developed. Compared to reported oxidation methods, broader substrates scope and milder conditions were achieved in
Nickel(0)-Catalyzed Hydroalkenylation of Imines with Styrene and Its Derivatives
Xiao, Li-Jun,Zhao, Chao-Yue,Cheng, Lei,Feng, Bo-Ya,Feng, Wei-Min,Xie, Jian-Hua,Xu, Xiu-Fang,Zhou, Qi-Lin
supporting information, p. 3396 - 3400 (2018/03/01)
A nickel(0)-catalyzed hydroalkenylation of imines with styrene and its derivatives is described. A wide range of aromatic and aliphatic imines directly coupled with styrene and its derivatives, thus providing various synthetically useful allylic amines with up to 95 % yield. The reaction offers a new atom- and step-economical approach to allylic amines by using alkenes instead of alkenyl-metallic reagents. Experiments and DFT calculations showed that TsNH2 promotes the proton transfer from the coordinated olefin to the imine, accompanied by a new C?C bond formation.
Pd/Zn(OTf)2 Co-Catalyzed Asymmetric Hydrogenation of Imines under Normal Pressure of Hydrogen
Gao, Yang,Yang, Fan,Pu, Dongdong,Laishram, Ronibala Devi,Fan, Ruifeng,Shen, Guoli,Zhang, Xuexin,Chen, Jingchao,Fan, Baomin
supporting information, p. 6274 - 6279 (2018/11/23)
An efficient method for the asymmetric hydrogenation of cyclic and acyclic N-sulfonylimines co-catalyzed by Pd/Zn(OTf)2 using hydrogen gas under ambient pressure was developed. The methodology offers an easy access to generate chiral sulfonylam
Asymmetric transfer hydrogenation reactions of: N -sulfonylimines by using alcohols as hydrogen sources
Yang, Fan,Chen, Jingchao,Shen, Guoli,Zhang, Xuexin,Fan, Baomin
supporting information, p. 4963 - 4966 (2018/05/23)
A palladium/zinc co-catalytic system was established and successfully utilized in the asymmetric transfer hydrogenation reactions of N-sulfonylimines with alcohols as hydrogen sources. Simple alcohols such as methanol, ethanol and benzyl alcohols are all
Verkade's Superbase as an Organocatalyst for the Strecker Reaction
Yang, Jian,Chatelet, Bastien,Ziarelli, Fabio,Dufaud, Véronique,Hérault, Damien,Martinez, Alexandre
supporting information, p. 6328 - 6332 (2018/11/23)
Proazaphosphatranes -Verkade's superbases- proved to be efficient organocatalysts for the Strecker reaction between protected imines and trimethylsilyl cyanide (TMSCN). Excellent to quantitative yields were reached and, compared to other systems, only low
