64611-67-2Relevant articles and documents
Palladium-Catalyzed Diastereoselective Formal [5 + 3] Cycloaddition for the Construction of Spirooxindoles Fused with an Eight-Membered Ring
Niu, Ben,Wu, Xiao-Yun,Wei, Yin,Shi, Min
supporting information, p. 4859 - 4863 (2019/06/27)
A Pd-catalyzed formal [5 + 3] intermolecular cycloaddition reaction of isatin-derived α-(trifluoromethyl)imines with aryl substituted vinylethylene carbonates (VECs) has been reported, affording trifluoromethyl-group-containing spirooxindoles fused with an eight-membered ring as a single diastereoisomer in good yields in the presence of a Br?nsted acid in a one-pot manner under mild conditions. The asymmetric version of this reaction has been also realized using a chiral phosphine ligand along with the further transformation of the obtained product to give a spirooxindolo pyrrolidine derivative upon oxidation.
Direct Aerobic Oxidative Reactions of 2-Hydroxyacetophenones
Sahoo, Subas Chandra,Nath, Utpal,Pan, Subhas Chandra
supporting information, p. 4434 - 4438 (2017/08/23)
Valuable and direct aerobic oxidation reactions of 2-hydroxyacetophenones were explored. The concept was based on the in situ treatment of small quantities of aerobically formed α-keto aldehydes that drove the reactions to the corresponding products. This new strategy was applied for a variety of oxidative reactions of 2-hydroxyacetophenones, and valuable products such as phthalides, quinoxalines, and α-keto amides were obtained in good to high yields.
Investigation and Application of Amphoteric α-Amino Aldehyde: An in Situ Generated Species Based on Heyns Rearrangement
Li, Guangxun,Tang, Ling,Liu, Hongxin,Wang, Yingwei,Zhao, Gang,Tang, Zhuo
supporting information, p. 4526 - 4529 (2016/09/28)
In situ generation of the reactive amphoteric α-amino aldehyde with simple α-hydroxy ketones and phenylamine via Heyns rearrangement was proven to be feasible. Metal-free domino reactions based on this reactive intermediate were effectively used to afford important N-heterocycles including polysubstituted pyrroles, indoles, and quinoxalines conveniently. A simple starting material, water as the only byproduct, and diversity of the useful products will make this method greatly attractive for pharmaceutics.