119040-16-3

Upstream product

• 100-52-7 benzaldehyde 
• 126-81-8 dimedone 
• 135-19-3 β-naphthol 
• 31039-88-0 3-(dimethylamino)-5,5-dimethyl-2-cyclohexen-1-one 
• 39487-54-2 1-((dimethylamino)(phenyl)methyl)naphthalen-2-ol 

Downstream Products

• 1416451-15-4 9,9-dimethyl-12-phenyl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-thione 

Relevant academic research and scientific papers

Polyvinylpolypyrrolidone supported triflic acid (PVPP.OTf); An efficient and recyclable heterogeneous catalyst for one-pot condensation of β-naphthol, aldehydes, and cyclic 1,3-dicarbonyl compounds

Polyvinylpolypyrrolidoniume triflate (PVPP.OTf) is found to be a recyclable heterogeneous catalyst for the one-pot condensation of β-naphthol, aldehydes, and cyclic 1,3-dicarbonyl compounds in good to excellent yield under reflux conditions. These catalyt

Fabrication of porous ultrathin carbon nitride nanosheet catalysts with enhanced photocatalytic activity for N- And O-heterocyclic compound synthesis

A simple and efficient photocatalytic method for the synthesis of dihydropyrimidinones (DHPMs) and their derivatives via porous ultrathin carbon nitride nanosheets (p-CNNs) without solvents was demonstrated. The yields of 3,4-dihydropyrimidin-2(1H)-ones/t

In SituAnodically Oxidized BMIm-BF4: A Safe and Recyclable BF3Source

The anodic oxidation of 1-butyl-3-methylimidazolium tetrafluoroborate (BMIm-BF4) efficiently generates BF3from BF4-. This Lewis acid, strongly bound to the ionic liquids, can be efficiently used in classical BF3-catalyzed reactions. We demonstrated the BF3/BMIm-BF4reactivity in four reactions, namely, a domino Friedel-Crafts/lactonization of phenols, the Povarov reaction, the Friedel-Crafts benzylation of anisole, and the multicomponent synthesis of tetrahydro-11H-benzo[a]xanthen-11-ones. In comparison with literature data using BF3-Et2O in organic solvents, in all the presented cases, analogous or improved results were obtained. Moreover, the noteworthy advantages of the developed method are thein situgeneration of BF3(no storing necessity) in the required amount, using only the electron as redox reagent, and the recycling of BMIm-BF4for multiple subsequent runs.

Efficient solvent free synthesis of tetrahydrobenzo[a]xanthene-11-one derivatives using nano-AlPO4/Ti (IV) as a green, heterogeneous and reusable catalyst

A new green protocol has been developed for synthesis of tetrahydrobenzo[a]xanthen-11-ones via a three component, one-pot condensation reaction of dimedone, β-naphthol and aromatic aldehydes using nano-AlPO4/Ti (IV) (NAP-Ti(IV)) as a reusable a

GO-Fe3O4-Ti(IV) as an efficient magnetic catalyst for the synthesis of bis(indolyl)methanes and benzo[a]xanthen-11-one derivatives

In this study, a new and efficient magnetic composite was synthesized based on graphene oxide (GO). Initially, GO was coated with magnetite, and then Ti(IV) was fixed on GO-Fe3O4 via a covalent graft. The magnet

Synthesis and characterization of a novel and reusable Fe3O4@THAM-CH2CH2-SCH2CO2H magnetic nanocatalyst for highly efficient preparation of xanthenes and 3-aminoisoxazoles in green conditio

In the present study, the synthesis and catalytic application of a novel thioglycolic acid doped on Fe3O4 nanomagnetic particles coated with tris(hydroxymethyl)aminomethane (THAM) and 1,2-dichloroethane are described. The morphology,

Preparation and application of highly efficient and reusable TBAPIL@Si(CH2)3@nano-silica-based nano-catalyst for preparation of benzoxanthene derivatives

Tetrabutylammonium prolinate ionic liquid (TBAPIL) was prepared, and mesoporous silica nanoparticles (NPs) were synthesized. Both of these were linked through propyltriethoxysilane to prepare a reusable catalyst TBAPIL@Si(CH2)3@silica NPs (TBAPILS). The formation of TBAPIL was checked through Fourier-transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (NMR) analysis. X-ray diffraction analysis confirmed the structure of silica NPs and linking of TBPAIL on it. Transmission electron microscopy proved the flourishing development of silica NPs. Scanning electron microscopy graphs exposed the altering in morphology of silica NPs and TBAPILS. FT-IR analysis also confirmed the formation of TBAPILS catalyst. Moreover, the effectiveness of the TBAPILS was also checked for the synthesis of various derivatives of tetrahydrobenzoxanthenes-11-ones. The formation and structure of obtained compounds were confirmed by FT-IR, elemental analysis, 1HNMR and 13C NMR spectral analysis. The catalyst TBAPILS was found to be used successfully up to five cycles without significant loss of activity.

Water mediated and Baker’s yeast accelerated novel synthetic protocols for tetrahydrobenzo[a]xanthene-11-ones and pyrazolo[3,4-b]quinolines

Water mediated and baker’s yeast catalyzed, efficient synthetic routes have been first time developed for multicomponent cyclocondensations leading to bioactive tetrahydrobenzo[a]xanthene-11-ones (4a–h) and pyrazolo[3,4-b]quinolines (7a–i). The developed protocols are conducted at room temperature and gave better to excellent yields of the titled compounds. The biocatalytical resource, activated baker’s yeast is readily available, and biodegradable. These protocols are more convenient, scalable, and obey most of the green principles also. The developed protocols are cost effective and better in operation than existing ones.

Preparation of core/shell/shell CoFe2O4/OCMC/Cu (BDC) nanostructure as a magnetically heterogeneous catalyst for the synthesis of substituted xanthenes, quinazolines and acridines under ultrasonic irradiation

Highly efficient synthesized magnetic cobalt ferrite nanoparticles supported on OCMC?Cu (BDC) was utilized in the preparation of biologically active heterocyclic compounds through one-pot three-component reactions between of aldehydes, dimedone, aryl amin

Sodium acetate/MWI: a green protocol for the synthesis of tetrahydrobenzo[α]xanthen-11-ones with biological screening

Abstract: An efficient, straightforward and rapid method has been developed for the synthesis of tetrahydrobenzo[α] xanthen-11-one using sodium acetate. The reaction was performed via three components: β-naphthol, dimedone with various aromatic aldehydes