87682-45-9

Basic information

• Product Name: Phosphoric acid, diethyl 3-(9H-fluoren-9-ylidene)-1,3-diphenyl-1-propenyl ester, (E)-
• CAS NO: 87682-45-9
• Molecular Formula: C32H29O4P
• Molecular Weight: 508.554
• Mol File: 87682-45-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Phosphoric acid, diethyl 3-(9H-fluoren-9-ylidene)-1,3-diphenyl-1-propenyl ester, (E)-(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphoric acid, diethyl 3-(9H-fluoren-9-ylidene)-1,3-diphenyl-1-propenyl ester, (E)-(87682-45-9)
• EPA Substance Registry System: Phosphoric acid, diethyl 3-(9H-fluoren-9-ylidene)-1,3-diphenyl-1-propenyl ester, (E)-(87682-45-9)

Safety Data

• Hazardous Substances Data: 87682-45-9(Hazardous Substances Data)

Upstream product

• 7142-76-9 diethyl (9H-fluoren-9-yl)phosphonate 
• 7338-94-5 1,3-diphenyl-2-propynone 

Downstream Products

• 87682-42-6 9-(1,3-diphenylprop-2-yn-1-ylidene)-9H-fluorene 

Relevant articles and documents

Anomaly in Palladium-Catalyzed Phenylethynylation of 2,2'-Dihalobiphenyls: Formation of Alkylidenefluorenes

2,2'-Diiodobiphenyl and 5,5'-dinitro-2,2'-dihalobiphenyls underwent palladium-catalyzed phenylethynylation with 2 mol of phenylacetylene to yield 3-(fluoren-9-ylidene)-1,3-diphenylpropyne and 3-(3,6-dinitrofluoren-9-ylidene)-1,3-diphenylpropyne, respectively.These fluorenyl compounds exhibited well-defined splitting patterns for the fluorenyl ring protons in the 250-MHz proton NMR spectra.The structure of 3-(fluoren-9-ylidene)-1,3-diphenylpropyne was further confirmed by an independent synthesis via the thermolysis of diethyl 3-(fluoren-9-ylidene)-1,3-diphenylpropen-1-yl phosphate.The mechanistic importance of the complex iodo(fluoren-9-ylidenebenzyl)bis(triphenylphosphine)palladium(II) in the catalytic cycle was established on the basis of its reaction with phenylacetylene to give 3-(fluoren-9-ylidene)-1,3-diphenylpropyne.