Acetic Anhydride → 25308-83-2

HRID 2397514Notes

Reaction equation

HRID 2397514 reaction equation
[Cl:1][C:2]([Cl:10])([Cl:9])[CH:3]([OH:8])[CH2:4][C:5]([CH3:7])=[CH2:6].[C:11](OC(=O)C)(=[O:13])[CH3:12]>N1C=CC=CC=1>[Cl:1][C:2]([Cl:10])([Cl:9])[CH:3]([O:8][C:11](=[O:13])[CH3:12])[CH2:4][C:5]([CH3:7])=[CH2:6]

Participants

4

Reactant 2

HCID 7918Acetic AnhydrideHCID 913911,1,1-Trichloro-4-methylpent-4-en-2-ol

Product 1

HCID 9139225308-83-2Yield 80.1%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

A mixture of 1321 g of 1,1,1-trichloro-2-hydroxy-4-methyl-4-pentene, 695 g of acetic anhydride, and 32.6 ml of pyridine was heated at 95°-100° for 1 hour. The low boiling by-products were removed under vacuum, and the residue was then distilled, yielding 1276 g of 1,1,1-trichloro-2-acetoxy-4-methyl-4-pentene; bp, 87°/5.5 mm.

Workup

  1. temperaturewas heated at 95°-100° for 1 hour
  2. customThe low boiling by-products were removed under vacuum
  3. distillationthe residue was then distilled

Sources & evidence

ORD record
ord-f75f38779efb46b7afd4d1eed85ef46f
Source dataset
uspto-grants-1977_05
Patent number
US04022672

Reaction notes

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