Quality Control of Indolin-2-one. I found the field of Chemistry; Engineering very interesting. Saw the article Selective C3-alkenylation of oxindole with aldehydes using heterogeneous CeO2 catalyst published in 2020.0, Reprint Addresses Siddiki, SMAH; Shimizu, K (corresponding author), Hokkaido Univ, Inst Catalysis, N-21,W-10, Sapporo, Hokkaido 0010021, Japan.; Shimizu, K (corresponding author), Kyoto Univ, Elements Strategy Initiat Catalysts & Batteries, Kyoto 6158520, Japan.. The CAS is 59-48-3. Through research, I have a further understanding and discovery of Indolin-2-one.
We report herein that a commercially available CeO2 is an active and reusable catalyst for the C3-selective alkenylation of oxindole with aldehydes under solvent-free conditions. This. catalytic method is generally applicable to different aromatic and aliphatic aldehydes, giving 3-alkyledene-oxindoles in high yields (87%-99%) and high stereoselectivities (79%-93% to E-isomers). This is the first example of the catalytic synthesis of 3-alkenyl-oxindoles from oxindole and various aliphatic aldehydes. The Lewis acid-base interaction between Lewis acid sites on CeO2 and benzaldehyde was studied by in situ IR. The structure-activity relationship study using CeO2 catalysts with different sizes suggests that defect-free CeO2 surface is the active site for this reaction. (C) 2020, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
Quality Control of Indolin-2-one. Welcome to talk about 59-48-3, If you have any questions, you can contact Rashed, MN; Touchy, AS; Chaudhari, C; Jeon, J; Siddiki, SMAH; Toyao, T; Shimizu, K or send Email.
Reference:
Indoline – Wikipedia,
,Indoline | C8H9N – PubChem