17255-67-3

Basic information

• Product Name: 4H-1-Benzopyran-4-one, 2-(4-bromophenyl)-2,3-dihydro-
• CAS NO: 17255-67-3
• Molecular Formula: C15H11BrO2
• Molecular Weight: 303.155
• Mol File: 17255-67-3.mol
• Article Data: 25

Chemical Properties

• CAS DataBase Reference: 4H-1-Benzopyran-4-one, 2-(4-bromophenyl)-2,3-dihydro-(CAS DataBase Reference)
• NIST Chemistry Reference: 4H-1-Benzopyran-4-one, 2-(4-bromophenyl)-2,3-dihydro-(17255-67-3)
• EPA Substance Registry System: 4H-1-Benzopyran-4-one, 2-(4-bromophenyl)-2,3-dihydro-(17255-67-3)

Safety Data

• Hazardous Substances Data: 17255-67-3(Hazardous Substances Data)

Upstream product

• 118-93-4 o-hydroxyacetophenone 
• 1122-91-4 4-bromo-benzaldehyde 
• 582-24-1 1-phenyl-2-hydroxyethanone 
• 766-96-1 4-bromo-1-ethynylbenzene 
• 90-02-8 salicylaldehyde 
• 108-95-2 phenol 
• 491-37-2 2,3-dihydro-4H-1-benzopyran-4-one 
• 5467-74-3 4-Bromophenylboronic acid 
• 3055-86-5 3-phenoxypropionitrile 
• 1258631-61-6 2-(benzo[d]thiazol-2-ylsulfonyl)-1-(2-hydroxyphenyl)ethanone 
• 1101612-73-0 C₂₀H₁₉BrO₄ 
• 118-61-6 2-hydroxy-benzoic acid ethyl ester 
• 936182-86-4 tert-butyl 3-(2-hydroxyphenyl)-3-oxopropanoate 
• 936183-43-6 tert-butyl (E)-3-(4-bromophenyl)-2-(2-hydroxyphenylcarbonyl)prop-2-enoate 

Downstream Products

• 20525-20-6 4'-bromoflavone 
• 132351-68-9 3-(4-bromophenyl)-4H-1-benzopyran-4-one 
• 65786-14-3 (2E)-3-(4-bromophenyl)-1-(2-hydroxyphenyl)prop-2-en-1-one 
• 138846-94-3 4-(4-Bromo-phenyl)-3,4-dihydro-benzo[b][1,4]dioxepin-2-one 
• 54210-23-0 3-hydroxy-2-(4-bromophenyl)-chromen-4(1H)-one 

Relevant articles and documents

Synthesis, characterization and crystal structure of 4′-ethynylflavanone and its chalcone precursor

The synthesis of (E)-4-ethynyl-2′-hydroxychalcone (7) and the 4′-ethynylflavanone (8), it's spectroscopic and X-ray characterization are described for both compounds. Products were prepared by reacting 4-bromobenzaldehyde (1) under Sonogashira coupling re

Organocatalytic Approach for Assembling Flavanones via a Cascade 1,4-Conjugate Addition/oxa-Michael Addition between Propargylamines with Water

A DBU-catalyzed one-pot cascade reaction of propargylamines and water for the synthesis of flavanones has been developed. This process proceeds via a sequence of 1,4-conjugate addition of water to alkynyl o-quinone methide (o-AQM), followed by the alkyne-allene isomerization and subsequent intramolecular oxa-Michael addition. This strategy provides a convenient method for accessing a broad range of flavanones in good to excellent yields with good functional-group tolerance, in particular, the reactive halo functional groups.

Synthesis of Flavanones via Palladium(II)-Catalyzed One-Pot β-Arylation of Chromanones with Arylboronic Acids

A total of 47 flavanones were expediently synthesized via one-pot β-arylation of chromanones, a class of simple ketones possessing chemically unactivated β sites, with arylboronic acids via tandem palladium(II) catalysis. This reaction provides a novel route to various flavanones, including natural products such as naringenin trimethyl ether, in yields up to 92percent.