756525-77-6

Basic information

• Product Name: 4-anilino-6,7,8,9-tetrahydrobenzofuro[3,2-g]-2H-1-benzopyran-2-one
• CAS NO: 756525-77-6
• Molecular Weight: 331.371
• Mol File: 756525-77-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 4-anilino-6,7,8,9-tetrahydrobenzofuro[3,2-g]-2H-1-benzopyran-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 4-anilino-6,7,8,9-tetrahydrobenzofuro[3,2-g]-2H-1-benzopyran-2-one(756525-77-6)
• EPA Substance Registry System: 4-anilino-6,7,8,9-tetrahydrobenzofuro[3,2-g]-2H-1-benzopyran-2-one(756525-77-6)

Safety Data

• Hazardous Substances Data: 756525-77-6(Hazardous Substances Data)

Upstream product

• 106920-99-4 1-(3-hydroxy-6,7,8,9-tetrahydrodibenzofuran-2-yl)-ethanone 
• 116719-54-1 2-hydroxy-4-(2'-oxo-cyclohexyloxy)acetophenone 
• 89-84-9 2',4'-dihydroxy-4-acetophenone 
• 1056477-06-5 2-bromocyclohexanone 
• 106921-02-2 2,3,4,5-tetrahydro-7-hydroxy-9H-benzofuro<3,2-g><1>benzopyrane-9-one 
• 62-53-3 aniline 

Relevant articles and documents

Synthesis of benzofuro-4-anilino-2H-1-benzopyran-2-one and benzofuro-pyrano -2H-1-benzopyran-2-one

The title compounds are synthesized from the corresponding 4-hydroxy-benzopyran-2[H]-ones 5a,b .2, 4-Dihydroxy-acetophenone 1a,b on condensation with 2-bromocyclohexanone, followed by linear cyclisation and then on reaction with diethyl carbonate in presence of pulverised sodium gives 6, 7, 8, 9-tetrahydro-4-hydroxy-benzofuro [3, 2-g]-2H-1-benzopyran-2-one 5a,b, which on reaction with aniline, followed by dehydrogenation with palladised charcoal gives benzofuro[3, 2-g]-4-anilino-2H-1-benzopyran-2-one 7a,b. 5a,b on condensation with benzalacetone followed by dehydrogenation with palladised charcoal furnishes 2-methyl-4-phenyl-4-hydro-pyrano[3, 2-c]-benzofuro[3, 2-g]-SH-benzopyran-5-one 9a,b.