65166-97-4Relevant articles and documents
Ethylene in organic synthesis: A new route to anticholenergic pyrrolidinoindolines, and other molecules with all carbon-quaternary centers via asymmetric hydrovinylation
Lim, Hwan Jung,Rajan Babu
, p. 6596 - 6599 (2011)
The asymmetric hydrovinylation (1 mol % Ni-cat., 1 atm, ethylene, >98% ee) products from 1-methylenetetralines are readily converted into 3, 3-disubstituted oxindoles and subsequently to pyrrolidinoindolines. These hydrovinylation products are also useful for the syntheses of enantiopure benzomorphans.
Nickel-Catalyzed Enantioselective Carbamoyl Iodination: A Surrogate for Carbamoyl Iodides
Abel-Snape, Xavier,Glorius, Frank,Lautens, Mark,Marchese, Austin D.,Mirabi, Bijan,Whyte, Andrew,Wollenburg, Marco
, p. 4780 - 4785 (2020/05/19)
This work reports the enantioselective formal transfer of a carbamoyl iodide across a 1,1-disubstituted styrene using Ni-catalysis. Employing an air-stable Ni(II) precatalyst and a commercially available chiral ligand ((S)-tBuPHOX), enantioenriched 3,3-disubstituted iodooxindoles were obtained in up to 90% yield and up to 97:3 e.r. This methodology was applied to the total synthesis of (-)-esermethole and (-)-phenserine.
The photocatalysis synthetic alkaloid (by machine translation)
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Paragraph 0126; 0127; 0128, (2018/11/22)
The present invention provides a catalytic synthesis method of living beings, the alkaloid comprises indole fused ring class and indole spiro compound, the process is as follows: in order to nitrogen aryl acrylamide as raw materials in under the photocatalysis with peroxide synthesis 3 - acetal 2 - indole compound, obtained through hydrolysis 3 - formyl - 2 - indole compound, further reducing synthetic alkaloid, the method routes mild, efficiency is high-efficient. The reaction in the illumination can occur under the room temperature, mild condition, has better substrate versatility and functional group tolerant. (by machine translation)
Metal-Free Synthesis of Oxazolidine-2,4-diones and 3,3-Disubstituted Oxindoles via ICl-Induced Cyclization
Yi, Wei,Fang, Xing-Xiao,Liu, Qing-Yun,Liu, Gong-Qing
, p. 6671 - 6681 (2019/01/04)
A metal-free method for the construction of oxazolidine-2,4-diones and oxindoles was discussed. Using iodine monochloride (ICl) as both the reaction promoter and iodide source, the iodolactonization of N-Boc acrylamides proceeded readily and provided the corresponding iodo oxazolidine-2,4-diones and oxazolidin-2-ones in good isolated yields. The obtained oxazolidine-2,4-diones can be used as key intermediates in the synthesis of toloxatone. When N-alkyl-N-arylacrylamide derivatives were subjected to the same reaction, iodocarbocyclization products 3,3-disubstituted oxindoles were obtained. The obtained oxindoles can be used as key intermediates in the synthesis of the alkaloids (±)-esermethole and (±)-physostigmine.