35086-87-4Relevant articles and documents
Catalytic Enantioselective Synthesis of 3,4-Polyfused Oxindoles with Quaternary All-Carbon Stereocenters: A Rh-Catalyzed C-C Activation Approach
Qiu, Bo,Li, Xiao-Tong,Zhang, Jian-Yu,Zhan, Jun-Ling,Huang, Shuang-Ping,Xu, Tao
, p. 7689 - 7693 (2018)
The first Rh-catalyzed enantioselective synthesis of a 3,4-polyfused oxindole ring system enabled by carboacylation of acrylic amides based on C-C activation is reported. This transformation provides a new entry to access 3,4-polyfused oxindoles bearing q
Photoredox Cyclization of N-Arylacrylamides for Synthesis of Dihydroquinolinones
Liu, Zhaosheng,Zhong, Shuai,Ji, Xiaochen,Deng, Guo-Jun,Huang, Huawen
supporting information, p. 349 - 353 (2021/12/27)
Metal- and additive-free photoredox cyclization of N-arylacrylamides is herein reported that provides a concise access to the formation of dihydroquinolinones. In this protocol, sustainable visible light was used as the energy source, and the organic light-emitting molecule 4CzIPN served as the efficient photocatalyst. This reaction system features exclusive 6-endo-trig cyclization selectivity with a generally good yield of a range of functionalized dihydroquinolinones and dihydrobenzoquinolinones. Mechanistical studies reveal the feasibility of both 1,3-H shift and intersystem crossing of the diradical intermediate.
Palladium-Catalyzed Tandem Dehydrogenative [4 + 2] Annulation of Terminal Olefins with N-Sulfonyl Amides via C-H Activations
Sun, Manman,Chen, Weida,Xia, Xiangyu,Shen, Guodong,Ma, Yongmin,Yang, Jianguo,Ding, Hanfeng,Wang, Zhiming
supporting information, p. 3229 - 3233 (2020/04/10)
A palladium-catalyzed tandem dehydrogenative [4 + 2] annulation of terminal olefins with N-sulfonyl amides via C(sp2)-H activation, allylic C(sp3)-H activation, and homoallylic C(sp3)-H elimination processes has been developed. Promoted by the DMSO ligand, various benzamides, heterocyclic arylamides, alkenyl carboxamides, and commercial olefins are found to be efficient substrates to construct important heterocyclic compounds bearing a vinyl substituent with high E stereoselectivity. Using air as the terminal oxidant also provides a great advantage regarding environmental friendliness.
Synthesis method and applications of N heteroatom polysubstituted benzoquaternary cycloketone
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Paragraph 0075; 0081-0084, (2020/03/12)
The invention discloses an N heteroatom polysubstituted benzoquaternary cycloketone synthesis method. According to the invention, the synthetic route starts from a known aniline compound A, the hundred g-scale preparation can be achieved, the yield can ac