Efficient green synthesis of isoindigo derivatives using sulfonic-acid-functionalized nanoporous silica (SBA-Pr-SO3H) catalyst and study of their antimicrobial properties
An efficient green condensation reaction has been developed for synthesis of trans-isoindigo derivatives using SBA-Pr-SO3H with pore size of 6 nm as a heterogeneous nanoporous acid catalyst under solvent-free conditions. Isoindigo derivatives have many industrial applications, e.g., dyes, drugs, organic solar cells, and semiconductor memories. The antimicrobial activities of these compounds have also been tested.
Phosphine‐Catalyzed (3+2) Annulation of Isoindigos with Allenes: Enantioselective Formation of Two Vicinal Quaternary Stereogenic Centers
作者:Wai‐Lun Chan、Xiaodong Tang、Fuhao Zhang、Glenn Quek、Guang‐Jian Mei、Yixin Lu
DOI:10.1002/anie.201900758
日期:2019.5.6
Construction of contiguous all‐carbon quaternary stereogenic centers is a long‐standing challenge in synthetic organic chemistry. In this report, a phosphine‐catalyzed enantioselective (3+2) annulation reaction between allenes and isoindigos, containing either two identical or different oxindole moieties, is introduced as a powerful strategy for the construction of spirocyclic bisindoline alkaloid
Facile and Convenient Synthesis of Functionalized Aryl-Containing Isoindigo Derivatives via Substituted Indolin-2-one Carbene Dimerization
作者:Andrei V. Bogdanov、Vladimir F. Mironov、Lenar I. Musin、Rashid Z. Musin、Dmitry B. Krivolapov、Igor A. Litvinov
DOI:10.1080/00397911.2011.558232
日期:2012.8.15
reaction of substituted benzyl-, aroylmethyl-, or 1-phenetylisatins with hexaethyltriaminophosphine has been shown to lead to the formation of a library of 3,3′-biindolinylidene-2,2′-diones with functionalized benzyl-, aroylmethyl-, and 1-phenetyl fragments at the nitrogen atom. GRAPHICAL ABSTRACT