5942-96-1

Basic information

• Product Name: ethyl 2-oxo-2H-pyran-5-carboxylate
• Synonyms: 2H-Pyran-5-carboxylic acid, 2-oxo-, ethyl ester
• CAS NO: 5942-96-1
• Molecular Formula: C₈H₈O₄
• Molecular Weight: 168.1467
• Mol File: 5942-96-1.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 263.5°C at 760 mmHg
• Flash Point: 141.5°C
• Density: 1.267g/cm³
• Vapor Pressure: 0.0103mmHg at 25°C
• Refractive Index: 1.508
• CAS DataBase Reference: ethyl 2-oxo-2H-pyran-5-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: ethyl 2-oxo-2H-pyran-5-carboxylate(5942-96-1)
• EPA Substance Registry System: ethyl 2-oxo-2H-pyran-5-carboxylate(5942-96-1)

Safety Data

• Hazardous Substances Data: 5942-96-1(Hazardous Substances Data)

Upstream product

• 10601-80-6 ethyl 3,3-diethoxypropanoate 
• 64-19-7 acetic acid 
• 140-88-5 ethyl acrylate 
• 7424-54-6 3,5-heptanedione 
• 105-45-3 acetoacetic acid methyl ester 
• 141-97-9 ethyl acetoacetate 
• 73178-43-5 (E)-diethyl glutaconate 
• 500-05-0 2H-pyran-2-one-5-carboxylic acid 
• 97507-42-1 ethyl (2E)-4-ethoxycarbonyl-5-ethoxy-2,4-pentadienoate 
• 129256-87-7 (E)-Diethyl-4-(ethoxymethylen)pent-2-endioat 
• 129256-88-8 (Z)-Diethyl-4-(ethoxymethylen)pent-2-endioat 
• 64-17-5 ethanol 

Relevant articles and documents

Organocatalytic [10+4] cycloadditions for the synthesis of functionalised benzo[a]azulenes

A direct and mild strategy for the synthesis of benzo[a]azulenes based on an organocatalytic [10+4] cycloaddition reaction is described. The strategy enables a diversity-oriented approach for the synthesis of various poly-functionalised azulenes from easily accessible starting materials.

A novel and concise synthesis of (±) 2-epi-Validamine

(±) 2-epi-Validamine has been synthesized in five steps by the chemical manipulation of the bicyclic lactone cycloadduct of ethyl coumalate and vinylene carbonate.

Reactions of Carboxylic Acids with "Phosphonium Anhydrides"

General considerations are outlined for a reagent to extract oxygen from organic molecules by an equivalent of dehydration.Reagents, (R3P+)2O, 2OTf-, were created for the purpose and subjected to a preliminary study.They were found to convert carboxylic acids readily and rapidly to anhydrides, esters, amides, amidines, benzimidazoles, and cyclic aryl ketones in good yields.