304878-44-2

Basic information

• Product Name: 6-amino-5-cyano-2-methyl-4-(4-trifluoromethylphenyl)-4H-pyran-3-carboxylic acid ethyl ester
• Synonyms: 6-amino-5-cyano-2-methyl-4-(4-trifluoromethylphenyl)-4H-pyran-3-carboxylic acid ethyl ester
• CAS NO: 304878-44-2
• Molecular Weight: 352.313
• Mol File: 304878-44-2.mol

Chemical Properties

• CAS DataBase Reference: 6-amino-5-cyano-2-methyl-4-(4-trifluoromethylphenyl)-4H-pyran-3-carboxylic acid ethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 6-amino-5-cyano-2-methyl-4-(4-trifluoromethylphenyl)-4H-pyran-3-carboxylic acid ethyl ester(304878-44-2)
• EPA Substance Registry System: 6-amino-5-cyano-2-methyl-4-(4-trifluoromethylphenyl)-4H-pyran-3-carboxylic acid ethyl ester(304878-44-2)

Safety Data

• Hazardous Substances Data: 304878-44-2(Hazardous Substances Data)

Upstream product

• 455-19-6 4-Trifluoromethylbenzaldehyde 
• 123-54-6 acetylacetone 
• 109-77-3 malononitrile 
• 141-97-9 ethyl acetoacetate 

Relevant articles and documents

Silica-bonded N-propylpiperazine sodium n-propionate as recyclable catalyst for synthesis of 4H-pyran derivatives

Silica-bonded N-propylpiperazine sodium n-propionate (SBPPSP) was found to act as an efficient solid base for the preparation of a series of 4H-benzo[b]pyran derivatives. SBPPSP was used as a recyclable heterogeneous solid base catalyst for the synthesis

Novel MgO-SnO2 solid superbase as a high-efficiency catalyst for one-pot solvent-free synthesis of polyfunctionalized 4H-pyran derivatives

We report for the first time the hydrothermal synthesis of MgO-SnO 2 solid superbase using P123 as template. The basicity of the materials was determined by two approaches of Hammett indicators method and temperature- programmed desorption using CO2 as adsorbate (CO 2-TPD). It was found that Mg/Sn molar ratio has an effect on MgO-SnO2 basicity, and superbasicity was observed only at Mg/Sn molar ratio of 1. With variation of Mg/Sn molar ratio, superbase strength (H-) was in the 26.5-33.0 range, showing superbasic value up to 0.939 mmol/g. The structure and texture of the as-prepared materials were studied by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and N2 physioadsorption methods. We detected particles of spherical morphology having diameter of ca. 150 nm. N2 adsorption- desorption results suggested that the materials are of mesoporous structure, having specific surface area of 115.2 m2/g and average pore diameter of 6 nm. The superbase was found to exhibit excellent catalytic activity towards the one-pot synthesis of polyfunctionalized 4Hpyrans through the condensation of aldehydes, malononitrile, and an active methylene compound. Its excellent catalytic efficiency is related to its superbasicity of the MgO-SnO2. The results provide a new route for the design and preparation of composite oxide superbases. Furthermore, the solid superbases will facilitate a strategy for high-efficiency synthesis of polyfunctionalized 4H-pyrans.

Biocatalytic tandem multicomponent reactions for one-pot synthesis of 2-Amino-4H-Pyran library and in vitro biological evaluation

A simple, effective and ecofriendly biocatalytic method has been developed to construct 2-amino-4H-pyrans via tandem multi-component reaction (MCR) of aldehyde, malononitrile and ethyl acetoacetate in one pot. The catalytic activity of lipases in differen

Synthesis method of 2-amino-4H-pyran and derivative of 2-amino-4H-pyran

The invention discloses a synthesis method of 2-amino-4H-pyran and a derivative of the 2-amino-4H-pyran. According to the method, candida rugosa lipase (CRL) is adopted as a catalyst to initiate a tandem MCR reaction, and 2-amino-4H-pyran is synthesized i