Enantioselective Cascade Reaction of α-Cyano Ketones and Isatylidene Malononitriles: Asymmetric Construction of Spiro[4<i>H</i>-pyran-oxindoles]
作者:Jin Xie、Wei-Long Xing、Feng Sha、Xin-Yan Wu
DOI:10.1002/ejoc.201600432
日期:2016.8
α‐Cyano ketones have been used for the first time as Michael donors in the construction of chiral spiro compounds. In the presence of only 2 mol‐% of a chiral multifunctional organocatalyst, chiral spiro[4H‐pyran‐oxindole] derivatives were prepared in excellent yields with good‐to‐excellent enantioselectivities. This method provides a new approach to the synthesis of chiral spirocyclic oxindoles.
Simple and Clean Procedure for Three-Component Syntheses of Spiro{pyrido[2,1-<i>b</i>]benzothiazole-3,3′-indolines} and Spiro{thiazolo[3,2-<i>a</i>]pyridine-7,3′-indolines} in Aqueous Medium
作者:Essam M. Hussein、Ahmed M. El-Khawaga
DOI:10.1002/jhet.908
日期:2012.11
A simple and efficient one‐pot three component synthesis of spiropyrido[2,1‐b]benzothiazole‐3,3′‐indoline} and/or spirothiazolo[3,2‐a]pyridine‐7,3′‐indoline} derivatives were carried out by the reaction of 2‐mercaptoaniline and/or mercaptoacetic acid, malononitrile, and a series of 2‐oxoindoline‐3‐ylidines in aqueousmedium. This method is of great value because of its environmentally benign character
简单高效的螺rid pyrido [ 2,1 – b ]苯并噻唑-3,3'-二氢吲哚}和/或螺3噻唑[3,2 - a ]吡啶-7,3'-的一锅三组分合成indoline}衍生物是通过2-巯基苯胺和/或巯基乙酸,丙二腈和一系列2-oxoindoline-3-ylidines在水性介质中反应而生成的。该方法由于其对环境有益的特性,高产量的处理和易于处理而具有很大的价值。
SYNTHESIS OF SOME NEW SPIROPYRANS CONTAINING INDOLINE MOIETY
作者:Maher F. El-Zohry、Yasser A. Elossaily、Thanaa A. Mohamed、Essam M. Hussein
DOI:10.1515/hc.2008.14.3.195
日期:2008.1
Spiroheterocycles were used as nitric oxide synthesis inhibitors." Photochromism of indolinospirochromens containing condensed 19 fragments in the indoline part of the molecule were achieved. As continuation to our interest in this area" encouraged us to suggest the synthesis of some new spiroheterocycles of pyrans containing indoline moiety. Experimental The time required for completion of each reaction was monitored
A One-Pot, Multicomponent Synthesis of 5′-Amino-2,2′-dioxospiro[indoline-3,3′-pyrrole]-4′-carbonitriles
作者:Mehdi Adib、Zahra Yasaei、Peiman Mirzaei
DOI:10.1055/s-0035-1560963
日期:——
A novel, one-pot, multicomponent synthesis of 5′-amino-2,2′-dioxospiro[indoline-3,3′-pyrrole]-4′-carbonitriles is described. The Knoevenagelcondensation reaction between isatin derivatives and malononitrile gave the corresponding cyclic arylmethylidenemalononitriles that, on treatment with isocyanides, afforded 2,2′-dioxospiro-bis-γ-lactams in good to excellent yields.
Engaging thieno[2,3‐b]indole‐2,3‐dione for the efficient synthesis of spiro[indoline‐3,4′‐thiopyrano[2,3‐b]indole] by reaction with
<i>N</i>
‐substituted isatilidenes
作者:Noble V. Thomas、Vidya Sathi、Ani Deepthi、Sruthi Leena、Sidharth Chopra
DOI:10.1002/jhet.4147
日期:2021.1
A simple and efficient method, proceeding through a new mechanistic pathway, for the synthesis of spiro[indoline‐3,4‐thiopyrano[2.3‐b]indole derivatives have been developed by exploiting the reaction of thieno[2,3‐b]indole‐2,3‐dione with N‐substituted isatilidenes. The compounds synthesized have been screened for antibacterial activity. The generality of the reaction and mechanistic rationale are presented