29083-05-4Relevant articles and documents
Organophotoredox-Catalyzed Decarboxylative N-Alkylation of Sulfonamides
Nakagawa, Masanari,Nagao, Kazunori,Ikeda, Zenichi,Reynolds, Matthew,Ibá?ez, Ignacio,Wang, Junsi,Tokunaga, Norihito,Sasaki, Yusuke,Ohmiya, Hirohisa
, p. 3930 - 3933 (2021/08/03)
We developed an organophotoredox-catalyzed reaction for N-alkylation of sulfonamides with aliphatic carboxylic acid-derived redox active esters as alkylating reagents. Under mild and transition metal-free conditions, a series of functionalized N-alkylated sulfonamides were prepared. This protocol also enabled the functionalization of pharmaceutical drugs bearing a sulfonamide or carboxylic acid moiety. This radical-mediated process allowed the assembly of three components including sulfonamides, redox active esters, and alkenes to yield complex sulfonamides in a one-pot manner.
Copper (II)/RuPHOX-Catalyzed Enantioselective Mannich-Type Reaction of Glycine Schiff Bases with Cyclic Ketimines
Shao, Qihang,Wu, Liang,Chen, Jianzhong,Gridnev, Ilya D.,Yang, Guoqiang,Xie, Fang,Zhang, Wanbin
supporting information, p. 4625 - 4633 (2018/11/10)
A Cu(II)/RuPHOX-catalyzed enantioselective Mannich-type reaction of glycine Schiff bases with cyclic ketimines was developed, affording chiral α,?-diamino acid derivatives in good yields with moderate to good ee and dr values. This provides an efficient methodology for furnishing chiral Cβ-tetrasubstituted α,β-diamino acid precursors. The catalytic system is compatible with a series of substrates. In addition, an interesting nonlinear effect of the catalyst's enantiomeric composition on reaction enantioselectivity was observed. (Figure presented.).
Simple branched sulfur-olefins as chiral ligands for Rh-catalyzed asymmetric arylation of cyclic ketimines: Highly enantioselective construction of tetrasubstituted carbon stereocenters
Wang, Hui,Jiang, Tao,Xu, Ming-Hua
supporting information, p. 971 - 974 (2013/04/10)
New, simple, sulfinamide-based branched olefin ligands have been developed and successfully used in Rh-catalyzed asymmetric arylations of cyclic ketimines, providing efficient and highly enantioselective access to valuable benzosultams and benzosulfamidat