Acetic Anhydride → Butylene glycol diacetate

HRID 1656792

Reaction equation

HRID 1656792 reaction equation
[C:1]([O:4][C:5](=O)[CH3:6])(=[O:3])[CH3:2]>[Cl-].[Zn+2].[Cl-]>[C:1]([O:4][CH2:5][CH2:6][CH2:6][CH2:5][O:4][C:1](=[O:3])[CH3:2])(=[O:3])[CH3:2]

Participants

3

Reactant 1

HCID 7918Acetic Anhydride

Product 1

HCID 69410Butylene glycol diacetateYield 31%

Reagents, catalysts & solvents 1

HCID 3007855ZincchlorideCatalyst

Conditions

Temperature
140 °C

Procedure

A 100-mL flask is charged with 1000 mol. wt. PTMEG (5.0 g), acetic anhydride (32 g), and zinc chloride (1.0 g). The mixture is refluxed for 4 h at 140° C. Tetramethylene glycol diacetate is obtained in 31% yield.

Workup

  1. additionA 100-mL flask is charged with 1000 mol

Sources & evidence

ORD record
ord-0b857101f23b4ee39e3a6605a4c7330e
Source dataset
uspto-grants-1993_10
Patent number
US05254723

Linked notes

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