142503-19-3

Basic information

• Product Name: Ethyl 3-benzoylamino-6-<2-(4,5-dihydro-5-oxo-2-phenyl-4-oxazolylidene)-1-(triphenylphosphoranylidene)ethyl>-2-oxo-2H-pyran-5-carboxylate
• CAS NO: 142503-19-3
• Molecular Weight: 732.729
• Mol File: 142503-19-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Ethyl 3-benzoylamino-6-<2-(4,5-dihydro-5-oxo-2-phenyl-4-oxazolylidene)-1-(triphenylphosphoranylidene)ethyl>-2-oxo-2H-pyran-5-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: Ethyl 3-benzoylamino-6-<2-(4,5-dihydro-5-oxo-2-phenyl-4-oxazolylidene)-1-(triphenylphosphoranylidene)ethyl>-2-oxo-2H-pyran-5-carboxylate(142503-19-3)
• EPA Substance Registry System: Ethyl 3-benzoylamino-6-<2-(4,5-dihydro-5-oxo-2-phenyl-4-oxazolylidene)-1-(triphenylphosphoranylidene)ethyl>-2-oxo-2H-pyran-5-carboxylate(142503-19-3)

Safety Data

• Hazardous Substances Data: 142503-19-3(Hazardous Substances Data)

Upstream product

• 14848-36-3 4-chloromethylene-2-phenyl-4H-oxazol-5-one 
• 13148-05-5 ethyl 3-oxo-4-(triphenylphosphoranylidene)butanoate 
• 142503-18-2 ethyl-3-(benzoylamino)-2-oxo-6-(triphenylphosphoranylidenemethyl)-2H-pyran-5-carboxylate 
• 15646-46-5 4-ethoxymethylene-2-phenyl-2-oxazolin-5-one 

Relevant articles and documents

α-Pyranones; I. Reaction of 4-ethoxy and 4-chloromethylene-2-phenyl-5(4H)-oxazolone with ethyl 3-oxo-4-(triphenylphosphoranylidene)butyrate: A new synthesis of 2H-pyran-2-one compounds

The reaction of 4-ethoxymethylene-5(4H)-oxazolone (2a) with ethyl 3-oxo-4-(triphenylphosphoranylidene)butyrate (1) affords ethyl 3-benzoylamino-2-oxo-6-triphenylphosphoranylidenemethyl-2H-pyran-5-cah boxylate (3). Starting from the corresponding 4-chlorom