Acetic Anhydride → 1-Acetoxy-2-(carbethoxymethyl)cyclopent-1-ene

HRID 1576555Notes

Reaction equation

HRID 1576555 reaction equation
[C:1]([CH2:6][CH:7]1[CH2:11][CH2:10][CH2:9][C:8]1=[O:12])([O:3][CH2:4][CH3:5])=[O:2].[C:13](OC(=O)C)(=[O:15])[CH3:14].O.C1(C)C=CC(S(O)(=O)=O)=CC=1>>[C:13]([O:12][C:8]1[CH2:9][CH2:10][CH2:11][C:7]=1[CH2:6][C:1]([O:3][CH2:4][CH3:5])=[O:2])(=[O:15])[CH3:14]

Participants

4

Reactant 3

HCID 7918Acetic AnhydrideHCID 521998p-Toluenesulfonic acid monohydrateHCID 2723663Ethyl 2-(2-oxocyclopentyl)acetate

Product 1

HCID 203242041-Acetoxy-2-(carbethoxymethyl)cyclopent-1-ene

Procedure

In the manner described in Example 20, treatment of 2-(carbethoxymethyl)cyclopentan-1-one (Example 19) with acetic anhydride and p-toluenesulfonic acid monohydrate gives an oil, b.p. 130°-131°C. (7 mm).

Workup

  1. customgives an oil, b.p. 130°-131°C. (7 mm)

Sources & evidence

ORD record
ord-4257ad8a283e4a9793ce5fa07e0c8dcc
Source dataset
uspto-grants-1976_09
Patent number
US03981868

Reaction notes

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