Bicyclic Guanidine‐Catalyzed Direct Asymmetric Allylic Addition of
<i>N</i>
‐Aryl Alkylidene‐Succinimides
作者:Jianmin Wang、Hongjun Liu、Yitian Fan、Yuanyong Yang、Zhiyong Jiang、Choon‐Hong Tan
DOI:10.1002/chem.201002183
日期:2010.11.8
Enantio‐enriched maleimides and succinimides that can be used to prepare aza‐heterocycles with multiple chiral centers are obtained from the bicyclicguanidine‐catalyzeddirectasymmetricallylicaddition of N‐arylalkylidene‐succinimides to imines. NMR studies and deuterium‐exchange experiments were used to study the intermediates in the reaction.
to this ring system has been reported yet. Herein, a facileone-pot synthesis from N-aryl itaconimides and 1,3-diarylisobenzofuran via strong acid triggered skeletal rearrangement reaction is described. Theoreticalstudy for this rearrangement is provided at M11/cc-pVDZ level of theory. Antitumor activity of obtained benzo[h]isoquinoline derivatives against human erythroleukemia K562 cell line was evaluated
Organocatalytic Asymmetric Tandem Conjugate Addition–Protonation of Azlactones to N-Itaconimides
作者:Xiaowei Zhao、Zhiyong Jiang、Gao Zhang、Yanli Yin
DOI:10.1055/s-0036-1588960
日期:2017.7
An unprecedented catalytic asymmetric reaction between azlactones and N -itaconimides has been developed. In the presence of an l - tert -leucine-based urea–tertiary amine Bronsted base catalyst, the tandem conjugate addition–protonation products could be attained in moderate yields with excellent enantio- and diastereoselectivities (up to 99% ee and >20:1 dr). The method provides an efficient approach
已经开发出一种前所未有的吖内酯和 N-衣康酰亚胺之间的催化不对称反应。在 l-叔-亮氨酸基脲-叔胺布朗斯台德碱催化剂存在下,串联共轭加成-质子化产物可以中等产率获得,具有优异的对映选择性和非对映选择性(高达 99% ee 和 >20:1博士)。该方法提供了一种有效的方法来获取有价值的手性 γ-叔胺取代的含有不相邻立体中心的琥珀酰亚胺。
Synthesis of Cyclic Imides (Methylphtalimides, Carboxylic Acid Phtalimides and Itaconimides) and Evaluation of their Antifungal Potential
作者:Dorimar Stiz、Rogério Corrêa、Felicia D. D';Auria、Giovanna Simonetti、Valdir Cechinel-Filho
DOI:10.2174/1573406412666160229150833
日期:2016.9.27
BACKGROUND This paper describes the synthesis of three different subfamilies of cyclic imides: methylphtalimides, carboxyl acid phtalimides and itaconimides. METHODS Fifteen compounds (five of each sub-family) were obtained by the reaction of appropriated anhydrides and different aromatic amines, using the manual Topliss method. Their structures were confirmed by spectral data (IR and NMR). The antifungal
Cascade recyclization of N-arylitaconimides as a new approach to the synthesis of polyfunctional octahydroquinolines
作者:Yurii A. Kovygin、Khidmet S. Shikhaliev、Mikhail Yu. Krysin、Andrei Yu. Potapov、Irina V. Ledenyova、Yevgeniya A. Kosheleva、Dmitriy Yu. Vandyshev
DOI:10.1007/s10593-019-02530-5
日期:2019.8
A new variant of Hantzsch reaction was developed for the synthesis of 1,2,3,4,5,6,7,8-octahydroquinolines on the basis of regioselective cascade recyclization of N-arylitaconimides in reactions with 3-aminocyclohex-2-enones. The mechanism of this domino process included С-nucleophilic addition of enaminone to the activated multiple bond of itaconimide and intramolecular transamidation with simultaneous