20770-16-5

Basic information

• Product Name: 6-Acetyl-7-hydroxy-8-methoxy-2,2-dimethyl-2H-1-benzopyran
• Synonyms: 6-Acetyl-7-hydroxy-8-methoxy-2,2-dimethyl-2H-1-benzopyran;Ripariochromene A
• CAS NO: 20770-16-5
• Molecular Formula: C14H16O4
• Molecular Weight: 248.27
• Mol File: 20770-16-5.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 6-Acetyl-7-hydroxy-8-methoxy-2,2-dimethyl-2H-1-benzopyran(CAS DataBase Reference)
• NIST Chemistry Reference: 6-Acetyl-7-hydroxy-8-methoxy-2,2-dimethyl-2H-1-benzopyran(20770-16-5)
• EPA Substance Registry System: 6-Acetyl-7-hydroxy-8-methoxy-2,2-dimethyl-2H-1-benzopyran(20770-16-5)

Safety Data

• Hazardous Substances Data: 20770-16-5(Hazardous Substances Data)

Upstream product

• 78-79-5 isoprene 
• 35817-19-7 6-acetyl-7,8-dihydroxy-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran 
• 528-21-2 2',3',4'-trihydroxyacetophenone 
• 36772-94-8 6-Acetyl-7-hydroxy-8-methoxy-2,2-dimethyl-3,4-dihydro-2H-<1>benzopyran 

Relevant articles and documents

NUCLEAR ISOPRENYLATION OF POLYHYDROXYACETHOPHENONES ACID CATALYSED CONDENSATION WITH ISOPRENE

A novel method of nuclear isoprenylation leading to the exclusive formation of 2,2-dimethylchromans has been achieved by the direct condensation of polyhydroxyacetophenones with isoprene in presence of phosphoric acid.Acetylchromans, thus obtained, are dehydrogenated with DDQ to given corresponding 2,2-dimethylchromenes.Using this method, synthesis of number of naturally occuring chromenes, viz. ripariochromene A (6), eupatoriochromene (10), encecalin (11), isoevodionol (16), evodionol (17) and methylevodionol (18) has been affected.