144036-33-9

Upstream product

• 2972-76-1 2-(2,4-dichlorobenzylidene)malononitrile 
• 126-81-8 dimedone 
• 874-42-0 2,4-dichlorobenzaldeyhde 
• 109-77-3 malononitrile 

Relevant academic research and scientific papers

Synthesis and structure elucidation of a novel mixed-ligand Cu(II) Schiff base complex and its catalytic performance for the synthesis of 2-amino-4H-pyrans and tetrahydro-4H-chromenes

A novel quinazoline Schiff base ligand, 3-((5-bromo-2-hydroxy-3-methoxybenzylidene)amino)-2-methylquinazolin-4(3H)-one [HL] and its mixed-ligand Cu(II) complex [Cu(L′)(Imi)], [L′] = 2-acetamido-N-(5-bromo-2-oxidobenzylidene) benzohydrazonate, [Imi] = imid

N,N-Dimethylamino-Functionalized Basic Ionic Liquid Catalyzed One-Pot Multicomponent Reaction for the Synthesis of 4H-Benzo[b]pyran Derivatives under Solvent-Free Condition

A simple, clean, and environmentally benign three-component process for the synthesis of 4H-benzo[b]pyran derivatives using basic ionic liquid N,N-dimethylaminoethylbenzyldimethylammonium chloride ([PhCH2Me 2N+CH2/su

A Mild and Environmentally Benign Synthesis of Tetrahydrobenzo[b]pyrans and Pyrano[c]chromenes Using Pectin as a Green and Biodegradable Catalyst

Pectin was applied as a green and biodegradable catalyst for the one-pot three-component synthesis of tetrahydrobenzo[b]pyrans and pyrano[c]chromenes, from the condensation between aromatic aldehydes, malononitrile, and dimedone or 4-hydroxycumarine at am

Preparation and characterization of MNPs–PhSO3H as a heterogeneous catalyst for the synthesis of benzo[b]pyran and pyrano[3,2-c]chromenes

In this study, an efficient and novel procedure has been reported for loading sulfanilic acid on the surface of magnetite Fe3O4 nanoparticles using tris(hydroxymethyl) aminomethane and 1,2-dichloroethane. Next, the synthesized nanoca

FSM-16/AEPC-SO3H: Synthesis, Characterization and Its Application for the Catalytic Preparation of 1,8-Dioxo-octahydroxanthene and Tetrahydrobenzo[b]pyran Derivatives

A new acidic mesoporous catalyst (FSM-16/AEPC-SO3H) was successfully synthesized and characterized by FT-IR, TGA, XRD, SEM, TEM, EDS and BET techniques. The FSM-16/AEPC-SO3H showed excellent catalytic activity for the synthesis of 1,

One-pot synthesis of benzopyrans catalyzed by silica supported dual acidic ionic liquid under solvent-free conditions

A mild and efficient method was developed for the preparation of tetrahydrobenzo[b]pyrans through a one-pot three-component condensation of aldehydes, malononitrile and dimedone in the presence of silica supported dual acidic ionic liquid (DAIL@SiO2

Synthesis of Core-Shell Magnetic Supramolecular Nanocatalysts based on Amino-Functionalized Calix[4]arenes for the Synthesis of 4H-Chromenes by Ultrasonic Waves

One of the most common phenol-formaldehyde cyclic oligomers from hydroxyalkylation reactions that exhibit supramolecular chemistry are calixarenes. These macrocyclic compounds are qualified to act as synthetic catalysts due to their specific features incl

An efficient one-pot three-component synthesis of tetrahydrobenzo[b]pyran and 3,4-dihydropyrano[c]chromene derivatives using starch solution as catalyst

Tetrahydrobenzo[b]pyran and 3,4-dihydropyrano[c]chromene derivatives were synthesized via a one-pot three-component condensation of aromatic aldehydes with malononitrile and dimedone or 4-hydroxycoumarin in excellent yields in the presence of starch solut

Rare earth perfluorooctanoate [RE(PFO)3] catalyzed one-pot synthesis of benzopyran derivatives

Rare earth perfluorooctanoate [RE(PFO)3] catalyzes facile condensation of dimedone, aldehydes and malononitrile under mild conditions to afford the corresponding 5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran derivatives in good to high yields. Th

Domino Knoevenagel condensation, Michael addition, and cyclization using ionic liquid, 2-hydroxyethylammonium formate, as a recoverable catalyst

The Knoevenagel condensation reaction of aromatic aldehydes with malononitrile or dimedone was investigated. Also, the three-component and one-pot synthesis of 2-amino-5-oxo-4-aryl-4,5-dihydropyrano[3,2-cchromene-3- carbonitrile derivatives by condensing