327175-79-1Relevant academic research and scientific papers
Copper-Catalyzed Enantioselective Alkylation of Enolizable Ketimines with Organomagnesium Reagents
Ortiz, Pablo,Collados, Juan F.,Jumde, Ravindra P.,Otten, Edwin,Harutyunyan, Syuzanna R.
, p. 3041 - 3044 (2017)
Inexpensive and readily available organomagnesium reagents were used for the catalytic enantioselective alkylation of enolizable N-sulfonyl ketimines. The low reactivity and competing enolization of the ketimines was overcome by the use of a copper–phosphine chiral catalyst, which also rendered the transformation highly chemoselective and enantioselective for a broad range of ketimine substrates.
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.
Direct Synthesis of Enolizable N-Sulfonyl Ketimines under Microwave Irradiation
Ortiz, Pablo,Collados, Juan F.,Harutyunyan, Syuzanna R.
supporting information, p. 1247 - 1250 (2016/03/19)
N-sulfonyl imines are widely used as substrates for a range of transformations. Access to N-sulfonyl aldimines is straightforward through direct condensation between the parent aldehyde and the sulfonamide. However, this approach is not efficient for the
Catalytic enantioselective hydrophosphonylation of ketimines using cinchona alkaloids
Nakamura, Shuichi,Hayashi, Masashi,Hiramatsu, Yuichi,Shibata, Norio,Funahashi, Yasuhiro,Toru, Takeshi
supporting information; experimental part, p. 18240 - 18241 (2010/04/25)
(Chemical Equation Presented) Organocatalytic enantioselective hydrophosphonylation of ketimines using cinchona alkaloids and Na 2CO3 afforded products with high enantioselectivity. Both enantiomers of α-amino phosphonates can be pre
