Isopropenyl acetate → HCID 4002931, compound

HRID 486816Notes

Reaction equation

HRID 486816 reaction equation
[CH:1]([CH:3]([C:5](=[O:8])[CH2:6][CH3:7])[CH3:4])=[O:2].[C:9](OC(C)=C)(=[O:11])[CH3:10]>S(=O)(=O)(O)O>[C:9]([O:2][CH:1]=[C:3]([CH3:4])[C:5](=[O:8])[CH2:6][CH3:7])(=[O:11])[CH3:10]

Participants

4

Reactant 2

HCID 7916Isopropenyl acetateHCID 127120372-Methyl-3-oxopentanal

Product 1

HCID 4002931HCID 4002931, compoundYield 70.5%

Reagents, catalysts & solvents 1

HCID 1118Sulfuric AcidCatalyst

Procedure

A mixture of 11.4 g of 2-formyl-3-pentanone and 17 g of isopropenyl acetate was brought to reflux in the presence of 0.1 g of sulfuric acid. After removal of the acetone formed at ambient pressure, the desired product was distilled under vacuum. In this manner 11 g of 1-acetoxy-2-methyl-1-pentene-3-one was obtained under conditions of 104° C. and 16 mm of mercury, which is a yield of 70%.

Workup

  1. customAfter removal of the acetone
  2. customformed at ambient pressure
  3. distillationthe desired product was distilled under vacuum

Sources & evidence

ORD record
ord-e57a8135a3064a578608bc5ff7dd9dc9
Source dataset
uspto-grants-1994_03
Patent number
US05292885

Reaction notes

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