Solvent-mediated One-pot Synthesis of Cyclic<i>N</i>-Substituted Imides
作者:Sambhaji V. Patil、Keshao A. Mahale、Kirankumar S. Gosavi、Ganesh B. Deshmukh、Nilesh S. Patil
DOI:10.1080/00304948.2013.798569
日期:2013.7.4
synthesized by elaboration of N-aryl maleimides.16–19 Evaluation of the available methods for the synthesis of N-substituted cyclic imides indicates that generally the amines are first reacted with the desired cyclic anhydride and the resulting amic acids are then cyclized to the corresponding imides using reagents such as Ac2O/NaOAc, Et3N/Ac2O, dimethyl sulfate/Na2CO3/tetrabutylammonium bromide,27 cyanuric
Synthesis of pyrrolo[3,4-d]isoxazolines via a one-pot radical functionalization/cycloaddition of methyl ketone, tert-butyl nitrite, and maleimide
作者:Hang Wang、Rui Cheng、Gangqiang Wang、Yang Shi、Jian Wang、Haibing Guo、Leslie Trigoura、Yalan Xing、Shaofa Sun
DOI:10.1016/j.tetlet.2020.151652
日期:2020.3
The development of tandem radical Csp3-H functionalization/ cycloaddition of methylketone, tert-butyl nitrite, and maleimide has been reported herein. A variety of pyrrolo[3,4-d]isoxazolines have been successfully synthesized under metal-free conditions with excellent functional group compatibility. X-ray crystallography of the pyrrolo[3,4-d]isoxazoline was obtained and the reaction mechanism was
Chiral Bicyclic Guanidine-Catalyzed Enantioselective Reactions of Anthrones
作者:Juan Shen、Thanh Truc Nguyen、Yong-Peng Goh、Weiping Ye、Xiao Fu、Junye Xu、Choon-Hong Tan
DOI:10.1021/ja064636n
日期:2006.10.1
catalyst for reactions between anthrones and various dienophiles. The catalyst can tolerate a range of substituents and substitution patterns, making several anthrone derivatives suitable for this reaction. Both Diels-Alder and Michael adducts were obtained in excellent yields, high regioselectivities, and high enantioselectivities. This is the first case of a highly enantioselective base-catalyzed anthrone
手性双环胍 1 被发现是蒽酮和各种亲二烯体之间反应的极好催化剂。该催化剂可以耐受一系列取代基和取代模式,使几种蒽酮衍生物适用于该反应。Diels-Alder 和 Michael 加合物均以优异的产率、高区域选择性和高对映选择性获得。这是高度对映选择性碱催化蒽酮 Diels-Alder 反应的第一个案例。
Asymmetric Diels-Alder reaction involving chiral benzimidazoles as organocatalysts
Functionalization of tetra- and octahydroacridine derivatives through Michael addition
作者:Ekaterina V. Zaliznaya、Oleg K. Farat、Svetlana A. Varenichenko、Alexander V. Mazepa、Victor I. Markov
DOI:10.1016/j.tetlet.2016.06.096
日期:2016.8
octahydroacridine derivatives has been achieved using a Michael-type reaction with N-arylmaleimides. This method enables the facile synthesis of biologically important N-aryl or NH pyrrolidine-2,5-diones bearing tetra- or octahydroacridine moieties in a single step with high yields. The reactions of octahydroacridine-4-carboxamide with N-arylmaleimides react further to afford rearrangement products.