Nano-zirconia as an excellent nano support for immobilization of sulfonic acid: a new, efficient and highly recyclable heterogeneous solid acid nanocatalyst for multicomponent reactions
作者:Ali Amoozadeh、Salman Rahmani、Mehrnoosh Bitaraf、Fatemeh Bolghan Abadi、Elham Tabrizian
DOI:10.1039/c5nj02430g
日期:——
Nano-zirconia-supported sulfonic acid as a novel, highly efficient and recyclable heterogeneous nanocatalyst is reported for the synthesis of multicomponent reactions.
报告了一种新型的、高效的、可回收的纳米催化剂——纳米氧化锆支撑的磺酸,用于合成多组分反应。
Efficient iron catalyzed ligand-free access to acridines and acridinium ions
作者:Susanta Mandal、Karan Chhetri、Samuzal Bhuyan、Biswajit G. Roy
DOI:10.1039/d0gc00617c
日期:——
important classes of compounds in terms of their usefulness in pharmaceuticals, materials, dyes and photo-catalysis. Here we present an unconventional FeCl3-alcohol catalysed one-pot method for their synthesis directly from aldehydes, 1,3-cyclohexanedione and amines. This method efficiently merged high atom-economy and diversity of multicomponent reaction with novel iron catalyzed dehydrogenation, using
Hollow Fe3O4@DA-SO3H: an efficient and reusable heterogeneous nano-magnetic acid catalyst for synthesis of dihydropyridine and dioxodecahydroacridine derivatives
highly stable and efficient super-paramagnetic catalyst, H-Fe3O4@DA-SO3H, involving hollow morphology of Fe3O4 as core and dopamine as shell was prepared through hydrothermal template-free method. It has been used as a new and recoverable catalyst for various one-pot multi-component organic reactions such as synthesis of 1,4-dihydropyridine (1,4-DHP) and 1,8-dioxodecahyroacridine derivatives. The new magnetic
摘要在这项工作中,首次涉及高度稳定和高效的超顺磁性催化剂H-Fe 3 O 4 @ DA-SO 3 H,涉及中空形态的Fe 3 O 4采用无水热模板法制备了以多巴胺为核,多巴胺为壳的方法。它已被用作新的可回收催化剂,用于各种一锅多组分有机反应,例如合成1,4-二氢吡啶(1,4-DHP)和1,8-二氧杂脱氧代ac啶衍生物。对该新型磁性催化剂进行了不同的分析,包括X射线粉末衍射(XRD),傅里叶变换红外光谱(FT-IR),场发射扫描电子显微镜(FE-SEM),透射电子显微镜(TEM),能量色散X射线光谱(EDX),振动样品磁力计(VSM)和热重分析(TGA)。此外,制备的空心Fe 3 O 4的ρ 壳计算出的微颗粒仅比固态球状Fe 3 O 4轻。常规地,使用外磁体回收催化剂,并且至少在六个连续的运行中重复使用催化剂,而没有明显损失其活性。 图形概要
Polyethylene glycol-mediated synthesis of decahydroacridine-1,8-diones catalyzed by ceric ammonium nitrate
作者:Mazaahir Kidwai、Divya Bhatnagar
DOI:10.2478/s11696-010-0070-2
日期:2010.1.1
Polyethylene glycol was found to be an inexpensive non-toxic and effective medium for one pot synthesis of high yields of decahydroacridine-1,8-diones in the presence of cericammoniumnitrate as the catalyst. Moreover, the solvent can be recovered and reused.
Multicomponent and 1,3-dipolar cycloaddition synthesis of triazole- and isoxazole-acridinedione/xanthenedione heterocyclic hybrids: Cytotoxic effects on human cancer cells
作者:Abdelkader Naouri、Amar Djemoui、Mouhamad Ridha Ouahrani、Mokhtar Boualem Lahrech、Najet Lemouari、Djenisa H.A. Rocha、Hélio Albuquerque、Ricardo F. Mendes、Filipe A. Almeida Paz、Luisa A. Helguero、Khaldoun Bachari、Oualid Talhi、Artur M.S. Silva
DOI:10.1016/j.molstruc.2020.128325
日期:2020.10
one/xanthenedione heterocyclic hybrids have been synthesized via 1,3-dipolar coupling reaction of N/O-substituted-acridinedione-alkyne or O-substituted-xanthenedione-alkyne substrates with various aromatic azides or oximes. In all cases, the cycloaddition is totally regioselective. The chemical structures of the synthesized compounds are determined using 2D NMR and are further confirmed by single-crystal