ChemicalBook CAS DataBase List 1,2-Propyleneglycol diacetate

1,2-Propyleneglycol diacetate synthesis

10synthesis methods

Product Name:1,2-Propyleneglycol diacetate
CAS Number:623-84-7
Molecular formula:C7H12O4
Molecular Weight:160.17

Propylene glycol diacetate is produced by Acetylation of Propylene glycol.

57-55-6 Synthesis

57-55-6
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64-19-7 Synthesis

64-19-7
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623-84-7
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Yield:-

Reaction Conditions:

with phosphotungstic acid;4-(pyridinium-1-yl)butane-1-sulfonate at 105; for 2 h;

Steps:

Testing Activity of Esterification

General procedure: Solid powders of 706 g (0.0035 mole) of PPS and 5.75 g (0.00175 mole) of un-dried TPA are mixed to be added with 11 g (0.175 mole) of HOAc to be stirred in an oil bath at 105°C. for 10 minutes (mm) for forming two layers of immiscible transparent liquids, where the lower layer is a flowing IL. Then, a mixture solution of 11 g (0.175 mole) of HOAc and 3.22 g (0.03 5 mole) of GL is added to be thrther stirred at 105° C. for 2 irs. Afterreaction, the flask is put on a rotavapor to remove out HOAc and watet Then, two layers of liquids are separated through staying still. The upper layer is a clear ester product; and, the lower layer is a flowing IL. The liquid at the upper layer is taken out to be analyzed with GC for ester products (GMA, GDA and GTA) with mole ratios figured out. When mole ratio (mole %) of GTA is higher and mole % of GMA. is lower, it means that the catalysis system has a higher esterification activity. The present invention has a GL conversion almost close to 100% with mole % of GMA, GDA and GTA as 3.7%, 46.3% and 50.0%, respectively.

References:

US2013/109882,2013,A1 Location in patent:Paragraph [0032]; [0039]

57-55-6 Synthesis

57-55-6
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