1177458-70-6

Upstream product

• 3132-99-8 m-bromobenzoic aldehyde 
• 126-81-8 dimedone 
• 135-19-3 β-naphthol 

Downstream Products

• 1416451-09-6 12-(3-bromophenyl)-9,9-dimethyl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-thione 

Relevant academic research and scientific papers

Metal free synthesis of tetrahydrobenzo[: A] xanthenes using orange peel as a natural and low cost efficient heterogeneous catalyst

In this work, a facile, efficient and metal free catalytic system has been developed for the synthesis of tetrahydrobenzo[a]xanthene derivatives via a one-pot three-component condensation of various aldehydes, 2-naphthol, and dimedone. For the first time,

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

Synthesis of the nano-magnetic ionic liquid based on caffeine and its catalytic application in the synthesis of xanthenes

In this research, a novel nano-sized cube-shaped magnetic ionic liquid based on caffeine was synthesized and characterized by various spectroscopic and analytical techniques including Fourier transform infrared spectroscopy, Raman spectroscopy, proton NMR

Phosphomolybdic acid supported on Schiff base functionalized graphene oxide nanosheets: Preparation, characterization, and first catalytic application in the multi-component synthesis of tetrahydrobenzo[a]xanthene-11-ones

New Schiff base (SB) functionalized graphene oxide (GO) nanosheets containing phosphomolybdic counter-anion H2PMo12O40ˉ (H2PMo) were successfully prepared by grafting of 3-aminopropyltriethoxysilane (

HAp-encapsulated γ-Fe2O3-supported dual acidic heterogeneous catalyst for highly efficient one-pot synthesis of benzoxanthenones and 3-pyranylindoles

A novel method is reported for the synthesis of benzoxanthenone and 3-pyranylindole derivatives via one-pot three-component reactions using a newly synthesized HAp-encapsulated γ-Fe2O3-supported dual acidic heterogeneous catalyst, as a reusable and highly efficient nanocatalyst. In this protocol the use of the nanocatalyst provided a green, useful and rapid method to generate products in short reaction times (4–20?min) and in excellent yields (87–96%). The paramagnetic nature of the catalyst provided a simple, trouble-free and facile approach for the separation of the catalyst by applying an external magnet, and it could be used in eight cycles without significant loss in catalytic efficiency.

New nano-Fe3O4-supported Lewis acidic ionic liquid as a highly effective and recyclable catalyst for the preparation of benzoxanthenes and pyrroles under solvent-free sonication

A novel magnetic nanomaterial-immobilized Lewis acidic ionic liquid was successfully synthesized by the covalent embedding of 3-(3-(trimethoxysilyl)propyl)-1H-imidazol-3-ium chlorozincate (ii) ionic liquid to the surface of Fe3O4 nanoparticles. The material was then characterized by FT-IR, SEM, TEM, TGA, ICP-OES, Raman, and EDS. Its performance as a new-generation Lewis acidic catalyst was also examined on the ultrasound-mediated synthesis of benzoxanthenes and pyrroles. Upon completion, the catalyst was simply recovered by an external magnet for multiple reuses without significant lessening of catalytic performance.

Rapid, efficient and solvent-free synthesis of (un)symmetrical xanthenes catalyzed by recyclable sulfated polyborate

The present study describes a rapid, simple and straightforward approach to the synthesis of 1,8-dioxo-octahydroxanthenes, 14-phenyl-14H-dibenzo[a,j]xanthene and tetrahydrobenzoxanthene-11-ones under solvent-free conditions using sulfated polyborate as a

Solvent-free Synthesis of 1,8-Dioxo-octahydroxanthenes and Tetra-hydrobenzo[a]xanthene-11-ones over Poly(N,N′-dibromo-N-ethylnaphtyl-2,7-sulfonamide)

In this work, poly(N,N′-dibromo-N-ethylnaphtyl-2,7-sulfonamide) (PDNES) as a highly efficient catalyst was applied for the synthesis of 1,8-dioxo-octahydroxanthenes and tetra-hydrobenzo[a]xanthene-11-ones under neutral and solvent-free conditions.