129354-35-4

Upstream product

• 2698-41-1 o-chlorobenzylidene malononitrile 
• 126-81-8 dimedone 
• 3471-13-4 dimedone 
• 89-98-5 2-chloro-benzaldehyde 
• 109-77-3 malononitrile 

Relevant academic research and scientific papers

An interpenetrating amine-functionalized metal-organic framework as an efficient and reusable catalyst for the selective synthesis of tetrahydro-chromenes

The amine group of the 2-amino-1,4-benzenedicarboxylic acid (NH2-BDC) ligand in a novel two-fold interpenetrated metal-organic framework, [Zn(NH2-BDC)(4-bpdb)]·2DMF (TMU-17-NH2) has been found to be a base catalyst active site. TMU-17-NH2 consists of both NH2-BDC and the N,N′-bipyridine-type rigid linkers (4-bpdb = 1,4-bis(4-pyridyl)-2,3-diaza-2,3-butadiene) with ZnN2O4 secondary building units (SBUs). The MOF was characterized by FT-IR spectroscopy, elemental analysis, powder X-ray diffraction, thermal gravimetric analysis and single-crystal X-ray diffraction. The amine-functionalized framework was used as an efficient heterogeneous base catalyst for the synthesis of tetrahydro-chromenes. Excellent conversions were obtained under mild conditions in the presence of 6 mol% catalyst. The TMU-17-NH2 catalyst could be reused several times without significant degradation in catalytic activity. This journal is

A cheap amino alcohol catalyzed one-pot, tri-component synthesis o tetrahydrochromene derivatives

An economic, efficient access to 4H-chromene derivatives was found. In the presence of threo-(1S,2S)-2- amino-1-(4-nitrophenyl)-1,3-propanediol, a chiral "waste" in the production of chloromycetin, and one-pot three- component Hantzsch reaction of dimedon

A clean one-pot synthesis of tetrahydrobenzo[b]pyran derivatives catalyzed by hexadecyltrimethyl ammonium bromide in aqueous media

An efficient and convenient approach to the synthesis of 2-amino-3-cyano-4-aryl-7,7-dimethyl-5-oxo-4H-5,6,7,8-tetra-hydrobenzo[b]pyran derivatives using hexadecyltrimethyl ammonium bromide (HTMAB) as the catalyst (10 mol%) is described. This method provid

An efficient, simple and green Zn(Phen)2Cl2 complex catalyzed synthesis of 4-H-Benzo[b]pyrans in water at ambient temperature

An efficient method for the synthesis of 4-H-benzo[b]pyrans has been developed by the use of Zn(Phen)2Cl2 (2 mol%) as an ecofriendly catalyst. The mixture of an appropriate aldehyde, malononitrile and dimedone in the presence of the

Synthesis, characterization and heterogeneous catalytic activity of diamine-modified silica-coated magnetite-polyoxometalate nanoparticles as a novel magnetically-recoverable nanocatalyst

Magnetite-polyoxometalate hybrid nanomaterials, Fe3O 4@SiO2@NH-NH2-PW, was prepared by grafting of H3PW12O40 on the diamine-functionalized Fe 3O4 magnetite

Ce(SO4)24H2O as a Recyclable Catalyst for an Efficient, Simple, and Clean Synthesis of 4H-Benzo[b]pyrans

An efficient method for the synthesis of 4H-benzo[b]pyrans has been developed by the use of Ce(SO4)24H2O (2.5 mol%) as a catalyst. Heating the mixture of an appropriate aldehyde, malononitrile, and dimedone in the presence

In situ preparation of CeO2 nanoparticles on the MCM-41 with magnetic core as a novel and efficient catalyst for the synthesis of substituted pyran derivatives

An inexpensive, environmentally-benign, and magnetically recoverable nanocomposite consisting of magnetic core and MCM-41 mesoporous silica shell which was synthesized by using Rice Husk Ash (RHA) as the silica source was prepared. Subsequently, the CeOs

A simple synthesis of magnetic nanoparticles-supported 4-aminomethylbenzoic acid as a highly efficient and reusable catalyst for synthesis of 2-amino-4H-chromene derivatives

A new 4-aminomethylbenzoic acid-functionalized Fe3O4 magnetic nanoparticles as a hybrid heterogeneous catalyst was synthesised and characterized by FT-IR, XRD, TGA, TEM, SEM and VSM techniques. The catalytic activity of this nanocata

Facile pathway for synthesis of two efficient catalysts for preparation of 2-aminothiophenes and tetrahydrobenzo[b]pyrans

Abstract: We report here a new magnetically recyclable catalyst consisting of iron-substituted Keggin-type heteropolyacid (HPA) grafted on modified Fe3O4 nanoparticles. The synthesized hybrid nanomaterial exhibited the excellent catalytic efficiency in condensation reaction for the preparation of tetrahydrobenzo[b]pyrans under solvent-free conditions as well as in the synthesis of 2-aminothiophenes via Gewald reaction. It must be noted that, HPA supported magnetite nanoparticles catalyzed the preparation of tetrahydrobenzo[b]pyrans, whereas for Gewald reaction amine-functionalized magnetite nanoparticles acted as a catalyst. Different characterization techniques such as Fourier transform infrared (FT-IR), X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM) were used to characterize the hybrid nanomaterial. The reusability of catalyst was affirmed by using in consecutive runs for five times. Performance of prepared catalyst was compared with the various previously reported catalysts; the newly synthesized catalysts found to be most efficient with regard to reaction time, yield and ease of catalyst separation. Graphical Abstract: [Figure not available: see fulltext.].

Magnetized melamine-modified polyacrylonitrile (PAN@melamine/Fe3O4) organometallic nanomaterial: Preparation, characterization, and application as a multifunctional catalyst in the synthesis of bioactive dihydropyrano [2,3-c]pyrazole

An efficient magnetic polymer-based nanomaterial was prepared in three main steps including synthesis of polyacrylonitrile (PAN), modification of PAN with melamine, and magnetization of the PAN@melamine compound by in situ construction of Fe3O