635704-51-7

Basic information

• Product Name: ethyl 2-oxo-8,8-diphenyl-2H,8H-pyrano[3,2-g][1]benzopyran-3-carboxylate
• Synonyms: ethyl 2-oxo-8,8-diphenyl-2H,8H-pyrano[3,2-g][1]benzopyran-3-carboxylate
• CAS NO: 635704-51-7
• Molecular Weight: 424.453
• Mol File: 635704-51-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: ethyl 2-oxo-8,8-diphenyl-2H,8H-pyrano[3,2-g][1]benzopyran-3-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: ethyl 2-oxo-8,8-diphenyl-2H,8H-pyrano[3,2-g][1]benzopyran-3-carboxylate(635704-51-7)
• EPA Substance Registry System: ethyl 2-oxo-8,8-diphenyl-2H,8H-pyrano[3,2-g][1]benzopyran-3-carboxylate(635704-51-7)

Safety Data

• Hazardous Substances Data: 635704-51-7(Hazardous Substances Data)

Upstream product

• 95-01-2 2,4-Dihydroxybenzaldehyde 
• 105-53-3 diethyl malonate 
• 6093-71-6 7-hydroxy-2-oxo-2H-chromene-3-carboxylic acid ethyl ester 
• 3923-52-2 1,1-diphenyl-2-propyn-1-ol 

Downstream Products

• 635704-54-0 2-oxo-8,8-diphenyl-2H,8H-pyrano[3,2-g][1]benzopyran-3-carboxylic acid 

Relevant articles and documents

Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins

New photochromic 2H-chromenes (=2H-1-benzopyrans) including a 3-carboxylated coumarin nucleus were synthesized from hydroxycoumarins, and, in one case, the corresponding trimethoxysilylcarboxamide was prepared. The photochromic behavior was studied under flash-photolysis conditions. The introduction of electron-withdrawing substituents in this position of the coumarin nucleus led to a global and significant bathochromic shift in the spectra of the open forms and to an interesting intensification in the colorability.