FEMA 2079 synthesis
- Product Name:FEMA 2079
- CAS Number:638-25-5
- Molecular formula:C13H26O2
- Molecular Weight:214.34
Yield: 86%
Reaction Conditions:
with diphenyl hydrogen phosphate in toluene at 125; for 7 h;Inert atmosphere;
Steps:
2 Preparation of Pentyl Octanoate in Accordance with the Process of the Present Disclosure
In a flask 2.88 gm of octanoic acid, 1.939 gm (2.39 ml) of pentyl alcohol, and 0.25 gm of diphenylphosphoric acid were placed under nitrogen atmosphere.
50 ml toluene was added in the flask under nitrogen atmosphere to obtain a mixture.
The mixture was refluxed at 125° C. for 7 hours.
Water formed during the reaction was separated azeotropically by using Dean-stark apparatus.
The resultant mixture formed during the reaction was monitored by thin layer chromatography (TLC).
After completion of the reaction (monitored by TLC), the resultant mixture was cooled to 25° C. and quenched with water to obtain a product mixture.
To separate product from the product mixture, 100 ml of ethyl acetate was added to the product mixture to obtain a biphasic system.
A first organic layer, i.e. ethyl acetate layer was separated.
The aqueous layer was further washed twice with ethyl acetate (50 ml each) followed by separation of the organic layer (second organic layer and third organic layer).
The separated organic layers were combined, concentrated, and dried over anhydrous sodium sulphate to obtain a crude product.
The crude product was purified using silica gel based flash chromatography using a solvent system containing 2-5% ethyl acetate in hexane to obtain pentyl octanoate having 98% purity.
The yield of the product (pentyl octanoate) was 86%.
References:
Reliance Industries Limited;Gupta, Virendrakumar;Phapale, Vilas Bhaskar US2018/86689, 2018, A1 Location in patent:Paragraph 0035-0037
124-07-2
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