加巴喷丁-内酰胺和柠檬酸形成玻璃状疏水性低共熔混合物。两种组分的某些非共晶摩尔比也是低熔点混合物,并且在它们的微分量热曲线中可以看出细微的差异。然而,它们对丙二腈、芳醛和双甲酮的反应施加不同的选择性促进。有趣的是,反应混合物选择性地产生四氢苯并[ b ]吡喃-2H-酮或1,8-二氧代-八氢呫吨,取决于在加巴喷丁-内酰胺/柠檬酸的熔化的2/1或1/2摩尔混合物中进行。对于1/1摩尔比的加巴喷丁-内酰胺和柠檬酸混合物的熔化也观察到优异的促进活性。该熔体被证明是通过芳基醛、苯胺衍生物、水和乙炔酯的多米诺反应合成4-羟基-2,5-二氢吡咯-5-酮的有效促进剂。不需要额外的有机溶剂来进行反应,并且生物相容性熔体在与产品轻松分离后可以重复使用多次。即使在环境温度下长期储存,共晶和非共晶熔体仍保持其粘性液态。
Visible light-promoted synthesis of pyrrolidinone derivatives <i>via</i> Rose Bengal as a photoredox catalyst and their photophysical studies
作者:Arup Dutta、Mostofa A. Rohman、Ridaphun Nongrum、Aiborlang Thongni、Sivaprasad Mitra、Rishanlang Nongkhlaw
DOI:10.1039/d1nj00343g
日期:——
Herein, we report an intramolecular radical cyclization reaction towards the synthesis of pyrrolidinone derivatives via metal-free photoredox catalysis under irradiation from blue LEDs. Some of the remarkable features of this protocol include synthetic efficiency, green reaction profile, easy isolation of products and short reaction time. The photophysical properties of synthesized compounds were investigated
Molecular Diversity of Three-Component Reactions of Aromatic Aldehydes, Arylamines, and Acetylenedicarboxylates
作者:Jing Sun、Qun Wu、Er-Yan Xia、Chao-Guo Yan
DOI:10.1002/ejoc.201100008
日期:2011.6
The three-componentreactions of aromaticaldehydes, arylamines, and acetylenedicarboxylates show very interesting moleculardiversity. In an aqueous ethanol solution the three-componentreaction gave polysubstituted 2-hydroxyhydropyridines. In absolute ethanol 1,4-dihydropyridines were produced in satisfactory yields. Finally, under acid catalysis, this three-componentreaction afforded polysubstituted
Admicellar catalysis in multicomponent synthesis of polysubstituted pyrrolidinones
作者:Rajib Sarkar、Chhanda Mukhopadhyay
DOI:10.1016/j.tetlet.2013.05.017
日期:2013.7
A multicomponent green methodology was developed to synthesize 3-hydroxy-2-pyrrolidinones under admicellar catalysis by TiO2 nano-particles at room temperature (30 degrees C). TiO2 nano-particles in aqueous CTAB solution promote the formation of admicelles and the reaction occurs in admicellar environment. The methodology was successfully applied to synthesize a variety of 3-hydroxy-2-pyrrolidinones and 3'-hydroxyspiro-2'-pyrrolidinone derivatives. (C) 2013 Elsevier Ltd. All rights reserved.