1262151-82-5

Upstream product

• 598-55-0 methyl carbamate 
• 135-19-3 β-naphthol 
• 552-89-6 2-nitro-benzaldehyde 

Relevant academic research and scientific papers

Preparation of methyl/benzyl(2-hydroxynaphthalen-1-yl)(aryl)methylcarbamate derivatives using magnesium hydrogen sulfate

A new approach to the synthesis of methyl/benzyl(2-hydroxynaphthalen-1-yl) (aryl)methylcarbamate derivatives based on the reaction of aldehydes, 2-naphthol and methyl/benzyl carbamate, using a catalytic amount of magnesium hydrogen sulfate [Mg(HSO4/

Design and characterization of nano-silica-bonded 3-n-propyl-1-sulfonic acid imidazolium chloride {nano-SB-[PSIM]Cl} as a novel, heterogeneous and reusable catalyst for the condensation of arylaldehydes with β-naphthol and alkyl carbamates

In this research, nano-silica-bonded 3-n-propyl-1-sulfonic acid imidazolium chloride {nano-SB-[PSIM]Cl} as a new and efficient Br?nsted acidic ionic liquid supported on silica has been synthesized, and characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, thermogravimetric, differential thermal gravimetric, X-ray diffraction, and energy-dispersive X-ray spectroscopy spectra. The presented silica-supported ionic liquid has been applied as a highly effective, heterogeneous, easy regenerable, and reusable catalytic system for the solvent-free condensation of arylaldehydes with β-naphthol and alkyl carbamates leading to α-carbamatoalkyl-β-naphthols. Once the nanocatalyst was regenerated and reused, no significant loss of its activity was observed. Graphical Abstract: Design and characterization of nano-silica-bonded 3-n-propyl-1-sulfonic acid imidazolium chloride {nano-SB-[PSIM]Cl} as a novel, heterogeneous and reusable catalyst for the condensation of arylaldehydes with β-naphthol and alkyl carbamates.[Figure not available: see fulltext.]

Copper chloride-catalyzed efficient three-component one-pot synthesis of carbamatoalkyl naphthols under solvent-free conditions

A highly efficient synthesis of carbamatoalkyl naphthols by a one-pot three-component condensation of 2-naphthol, aldehydes, and methyl/ethyl/benzyl carbamates in the presence of copper chloride under thermal solvent-free conditions has been performed. The suitable solvent, amounts of raw materials and catalyst, and reaction temperature were investigated. Experimental results show that only 1 mol% catalyst was enough to induce the conversion. All new products were characterized by mp, IR, 1H NMR, 13C NMR and mass spectrum. A mechanism to rationalize the reaction was proposed.

Solvent-free one-pot synthesis of 1-carbamatoalkyl-2-naphthols by a tin tetrachloride catalyzed multicomponent reaction

An efficient one-pot synthesis of 1-carbamatoalkyl-2-naphthols using tin tetrachloride as a catalyst for the three-component condensation reaction of 2-naphthol, aldehydes, and carbamates under thermal, solvent-free conditions is described. This new approach has advantages such as mild conditions, short reaction time, high yield, simple work-up, and an inexpensive catalyst. Graphical Abstract: [Figure not available: see fulltext.]

Synthesis of 1-carbamatoalkyl-2-naphthols in Tween 20 aqueous micelles

A facile and efficient procedure for the preparation of 1-carbamatoalkyl-2-naphthols by a one-pot multi-component reaction of 2-naphthol, aldehydes and carbamates is described. The procedure is carried out under neutral conditions at 75-80 °C in an aqueous medium catalysed by the non-ionic surfactant Tween A loading of 20. 5 wt% of the catalyst was optimal. After the reaction, the catalyst could be simply recovered and reused directly without any further treatment. Product yields were slightly decreased after six cycles. The effect of some common solvents other than water on the reaction was explored besides the water. The generality of this multi-component condensation reaction was evaluated with various aldehydes and carbamates under the optimised conditions.

A convenient three-component synthesis of carbamatoalkyl naphthols catalyzed by cerium ammonium nitrate

A highly efficient synthesis of carbamatoalkyl naphthols has been performed by a one-pot threecomponent condensation of 2-naphthol, aldehydes, and methyl/ethyl/benzyl carbamates in the presence of cerium ammonium nitrate under solvent-free conditions at 70 °C. The solvent, optimal amounts of raw materials and catalyst, and reaction temperature are investigated. Experimental results show that only 0.1 mmol catalyst is enough to induce the conversion. Most reactions are performed within a short reaction time. The structures of all products were characterized by IR, 1H NMR, 13C NMR, MS, and elemental analysis. A mechanism to rationalize the reaction has been proposed.

Bronsted acidic ionic liquids as efficient catalysts for clean synthesis of carbamatoalkyl naphthols

Under mild conditions and without any additional organic solvent, synthesis of carbamatoalkyl naphthols could be carried out in the present of two halogen-free Bronsted acidic ionic liquids, 3-methyl-1-(4-sulfonic acid)butylimidazolium hydrogen sulfate and N-(4-sulfonic acid)butylpyridinium hydrogen sulfate. A widerange of aromatic aldehydes easily undergo condensation with β-naphthol and methyl or benzyl carbamate to afford the desired products of good purity in excellent yields. The present methodology offers several advantages such as a simple procedure with an easy work-up, short reaction times, and excellent yields. The catalysts could be recycled and reused for several times without substantial reduction in their catalytic activities. Copyright

Preparation of methyl (2-hydroxynaphthalen-1-yl)(aryl)methyl/ benzylcarbamate derivatives using magnesium (II) 2,2,2-trifluoroacetate as an efficient catalyst

Multi-component condensation reactions of aldehydes, 2-naphthol and methyl/benzyl carbamate have been done by using magnesium 2,2,2-trifluoroacetate [Mg(OOCCF3)2] as an efficient catalyst. This methodology results in the synthesis of a variety