21045-82-9

Basic information

• Product Name: Butanoic acid, 2-chloro-3-oxo-, 2-propenyl ester
• Synonyms: Butanoic acid, 2-chloro-3-oxo-, 2-propenyl ester
• CAS NO: 21045-82-9
• Molecular Formula: C₇H₉ClO₃
• Molecular Weight: 176.59756
• Mol File: 21045-82-9.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 45-48 °C(Press: 2 Torr)
• Appearance: /
• Density: 1.165±0.06 g/cm3(Predicted)
• PKA: 7.75±0.46(Predicted)
• CAS DataBase Reference: Butanoic acid, 2-chloro-3-oxo-, 2-propenyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Butanoic acid, 2-chloro-3-oxo-, 2-propenyl ester(21045-82-9)
• EPA Substance Registry System: Butanoic acid, 2-chloro-3-oxo-, 2-propenyl ester(21045-82-9)

Safety Data

• Hazardous Substances Data: 21045-82-9(Hazardous Substances Data)

Upstream product

• 1118-84-9 allyl acetoacetate 

Downstream Products

• 61363-98-2 chloro-(4-chloro-phenylhydrazono)-acetic acid allyl ester 
• 61364-03-2 2-(4-chloro-phenyl)-2,3,3a,4-tetrahydro-furo[3,4-c]pyrazol-6-one 
• 121720-92-1 (E)-3-(2,4-Dinitro-phenylazo)-but-2-enoic acid allyl ester 
• 121721-02-6 2-(2,4-dinitrophenyl)-4-methyl-1,2,4a,7a-tetrahydrofuro<3,4-d>pyridazin-5(7H)-one 
• 121721-03-7 2-benzoyl-4-methyl-1,2,4a,7a-tetrahydrofuro<3,4-d>pyridazin-5(7H)-one 
• 121720-87-4 allyl 3-(benzoylazo)crotonate 
• 370593-79-6 2-(4-nitrophenyl)-2,3,3a,4,5,6-hexahydro-6-oxofuro[3,4-c]pyrazole 
• 370593-78-5 C₁₁H₁₀ClN₃O₄ 
• 121720-89-6 2-Chloro-3-[(2,4-dinitro-phenyl)-hydrazono]-butyric acid allyl ester 
• 121720-84-1 (E)-allyl 3-(phenylazo)crotonate 
• 121720-81-8 allyl 2-chloroacetoacetate benzoylhydrazone 

Relevant articles and documents

Intramolecular Cycloaddition of Azoalkenes Derived from Allylic β-Keto Esters

The 2,4-dinitrophenylhydrazone (2a) of allyl 2-chloroacetoacetate has been prepared and converted into the azoalkene (4a) by reaction with sodium carbonate.The azoalkene undergoes an intramolecular Diels-Alder reaction when heated under reflux in toluene