3818-99-3

Basic information

• Product Name: 1-(5-Methoxy-2,2,8,8-tetramethyl-2H,8H-benzo[1,2-b:5,4-b']dipyran-10-yl)ethanone
• Synonyms: 1-(5-Methoxy-2,2,8,8-tetramethyl-2H,8H-benzo[1,2-b:5,4-b']dipyran-10-yl)ethanone;Franklinone
• CAS NO: 3818-99-3
• Molecular Formula: C19H22O4
• Molecular Weight: 314.37558
• Mol File: 3818-99-3.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1-(5-Methoxy-2,2,8,8-tetramethyl-2H,8H-benzo[1,2-b:5,4-b']dipyran-10-yl)ethanone(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(5-Methoxy-2,2,8,8-tetramethyl-2H,8H-benzo[1,2-b:5,4-b']dipyran-10-yl)ethanone(3818-99-3)
• EPA Substance Registry System: 1-(5-Methoxy-2,2,8,8-tetramethyl-2H,8H-benzo[1,2-b:5,4-b']dipyran-10-yl)ethanone(3818-99-3)

Safety Data

• Hazardous Substances Data: 3818-99-3(Hazardous Substances Data)

Upstream product

• 7507-89-3 2,6-dihydroxy-4-methoxy-acetophenone 
• 78-79-5 isoprene 

Downstream Products

• 18780-93-3 Tetrahydrofranklinon 

Relevant articles and documents

Convenient Synthesis of Alloevodione, Alloevodionol and Franklinone

3,4-Dihydro-6-hydroxy-5,7-dimethoxy-2,2-dimethyl-2H-1-benzopyran (5), obtained by nuclear prenylation of 2,6-dimethoxyquinol, on methylation followed by Friedel-Crafts acetylation gives 8-acetyl-3,4-dihydro-7-hydroxy-5,6-dimethoxy-2,2-dimethyl-2H-1-benzopyran (7).Dehydrogenation of 7 with DDQ followed by methylation affords alloevodione (9).Similar isoprenylation of 2,6-dihydroxy-4-methoxyacetophenone gives a mixture of dichroman (10) and the monochroman (11).Dehydrogenation of 10 and 11 furnishes franklinone (3) and alloevodionol (1) respectively.