15782-01-1

Upstream product

• 392669-58-8 5,5,5',5'-tetramethyl-2,2'-(2-methoxy-benzylidene)-bis-cyclohexane-1,3-dione 
• 126-81-8 dimedone 
• 135-02-4 ortho-anisaldehyde 
• 139484-03-0 2,2'-(2-methoxyphenyl)methylene-bis-(3-hydroxy-5, 5-dimethyl-2-cyclohexene-1-one) 

Downstream Products

• 155333-64-5 4-Methoxy-3-(3,3,6,6-tetramethyl-1,8-dioxo-2,3,4,5,6,7,8,9-octahydro-1H-xanthen-9-yl)-benzenesulfonyl chloride 

Relevant academic research and scientific papers

Sustainable synthesis of 1,8-dioxooctahydroxanthenes in deep eutectic solvents (DESs)

Deep eutectic solvents are obtained by the fusion of two or more compounds: hydrogen bond donors (HBDs) and hydrogen bond acceptors (HBAs). They are formed by mixing the constituents with moderate heating (via hydrogen bond interactions). In this manuscript, the dual activities (as catalysts and reaction media) of six deep eutectic solvents were compared for the synthesis of 1,8-dioxooctahydroxanthenes at room temperature. Here DES 2, a combination of ZrOCl2·8H2O with ethylene glycol at a 1 : 2 ratio, was found to be the supreme catalyst among the six DESs and was reused for five batches. The photophysical properties of the xanthene derivatives were examined by UV-vis and fluorescence spectroscopy in THF. The synthesised molecules showed absorption maxima around 285-295 nm and emission maxima around 403-404 nm. The ground state dipole moments of all the molecules were calculated by the Debye-Guggenheim method using toluene as the non-polar solvent. All the synthesised molecules showed significant dipole moment values and are in good agreement with theoretical values.

Ultrasound promoted rapid and green synthesis of 1,8-dioxo-octahydroxanthenes derivatives using nanosized MCM-41-SO3H as a nanoreactor, nanocatalyst in aqueous media

An efficient and green procedure has been developed for the synthesis of 1,8-dioxo-octahydroxanthenes derivatives. The reaction was carried out in water under ultrasound irradiation, using nanosized MCM-41-SO3H. In this method, several types of

Synthesis of tetra- and octahydroxanthene derivatives by the condensation of dimedone with aromatic aldehydes

The reaction of dimedone with salicyl and 2-hydroxy-1-naphthoyl aldehydes gave derivatives of tetrahydroxanthene and tetrahydrobenzo[a]xanthene and not aldimedone as occurs in condensations with other aldehydes. Derivatives of decahydroacridine were obtained by reaction of the tetrahydroxanthene derivatives with methyl-and ethylamine. Tetrahydro- and octahydroxanthene derivatives were obtained from the reaction of acetylsalicylaldehyde with dimedone in acetic anhydride. The structures of the ketoenol forms of the products containing a β-ketoenol unit were determined by 1H and 13C NMR spectroscopy, and the mechanism of their interconversion is discussed. 1997 Plenum Publishing Corporation.

Synthesis, characterization, and application of cobalt hydrogen sulfate as a new heterogeneous, reusable and efficient catalyst in one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxooctahydroxanthenes

Cobalt hydrogen sulfate is synthesized and characterized by XRD, FTIR and TEM measurements. The efficiency of this readily available, cheap, non-toxic, heterogeneous and reusable catalyst is shown in the one-pot preparation of aryl- and alkyl-14H-dibenzox

Ag nanoparticles stabilized on cyclodextrin polymer decorated with multi-nitrogen atom containing polymer: An efficient catalyst for the synthesis of xanthenes

In attempt to broaden the use of cyclodextrin polymer for catalytic purposes, a novel covalent hybrid system was prepared through growth of multi-nitrogen atom containing polymer (PMelamine) derived from reaction of ethylenediamine and 2,4,6-trichloro-1,3

Zn[(L)Proline]2: An eligible candidate for the synthesis of xanthenediones in water

An efficient route for the condensation of aldehydes with dimedone in the presence of Zn[(L)Proline]2 in water has been reported. Hydrophilicity of the catalyst is the main attribute of this reaction. The water-mediated reaction using catalytic

Cupric nitrate catalyzed efficient and facile synthesis of 1,8-dioxo-octahydroxanthene derivatives

An efficient and convenient approach to the synthesis of 1,8-dioxo-octahydroxanthene derivatives by using catalytic amount (10 mol %) of cupric nitrate [Cu(NO3)2·3H2O] in acetonitrile and the yields obtained are in good to

Acidic polymer containing sulfunic acid and carboxylic acid groups heterogenized with natural clay: A novel metal free and heterogeneous catalyst for acid-catalyzed reactions

A novel metal-free solid acid catalyst, PHSA, has been designed and synthesized through facile and environmentally benign procedure via using halloysite nanoclay as a natural and biocompatible support. The synthetic protocol included co-polymerization of

Introduction of a novel dicationic Br?nsted acidic ionic liquid based on pyrazine and its application in the synthesis of xanthenediones and 3, 4-dihydropyrimidin-2(1H)-ones under solvent-free conditions

A novel dicationic Br?nsted acidic ionic liquid based on pyrazine has been prepared and characterized by FTIR, 1H NMR, 13C NMR, MS, thermal gravimetric and differential thermal gravimetric analysis and also Hammett acidity function.

One-pot three-component synthesis of 1,8-dioxooctahydroxanthenes and 14-Aryl-14Hdibenzo[a,j]xanthenes using a new nanostructure zeolite

Abstract: A new modified zeolite containing Fe nanoparticles loaded in zeolite X (Fe-X) has been synthesized and characterized by FT-IR, XRD, EDX and SEM techniques and its catalytic activity has been investigated in the synthesis of two series of xanthen