4805-75-8

Basic information

• Product Name: 3-bromo-2,2-diphenyl-chroman-4-one
• CAS NO: 4805-75-8
• Molecular Weight: 379.253
• Mol File: 4805-75-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3-bromo-2,2-diphenyl-chroman-4-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3-bromo-2,2-diphenyl-chroman-4-one(4805-75-8)
• EPA Substance Registry System: 3-bromo-2,2-diphenyl-chroman-4-one(4805-75-8)

Safety Data

• Hazardous Substances Data: 4805-75-8(Hazardous Substances Data)

Upstream product

• 3780-21-0 2,2-diphenylchroman-4-one 

Downstream Products

• 6005-12-5 2,3-diphenyl-4H-chromen-4-one 
• 3780-21-0 2,2-diphenylchroman-4-one 
• 100153-05-7 14H-dibenzo[a,c]xanthen-14-one 

Relevant articles and documents

Photolysis of 3-bromochroman-4-ones

Photolysis of 3-bromochroman-4-ones (1a-f) leads to debrominated chromanones (2a-f) and chromones (3a-f) as major products. Their formation is accounted for in terms of primary cleavage of the carbon halogen bond to give α-carbonyl radicals (I) and/or cations (II). In the case of the 2,2-disubstituted compounds (1d-f), intermediates (II) undergo rearrangement with 1,2-shift of the phenyl or benzyl substituent prior to deprotonation. Minor by-products are the pentacyclic pyrone (4e) or 2-methylchromone (3a) (starting from 1e and 1f, respectively).