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ChemicalBook CAS DataBase List Pentadecanoic acid
1002-84-2

Pentadecanoic acid synthesis

9synthesis methods
A suspension of benzoic acid (1, 50 mg) and FSM-16 (100 mg) in dry hexane (5 mL) was irradiated with a 400-W high-pressure mercury lamp for 5 h at room temperature. FSM-16 was then filtered and washed with ethyl acetate and the filtrate was concentrated u
-

Yield:1002-84-2 71%

Reaction Conditions:

with palladium 10% on activated carbon;W(OTf)6;hydrogen at 135; under 760.051 Torr; for 12 h;

Steps:

31 Preparation of N-Pentadecanoic acid by Pentadecanolide

General procedure: Specific methods are as follows: propiolactone was added (0.36g, 5mmol), palladium on carbon (10%, 26.5mg, 0.025mmol, 0.5mol%) in the reactor and W (OTf)6(107.8mg, 0.1mmol, 2mol%). A hydrogen balloon connected to the top of the reactor, and the reactor was purged with hydrogen gas atmosphere. Hydrogen atmosphere at normal pressure, the reaction was stirred at 135 deg.] C after 12h, detected by gas, γ- valerolactone complete conversion of starting material, and only n-valeric acid. The method carried out as follows completion of the hydrogenation reaction of the ring-opening reaction system separation, to obtain the desired product n-valeric acid: The reaction was completed reaction mixture was dissolved with methylene chloride, filtered to remove the palladium on carbon catalyst and W (OTf)699% yield measured propionic acid, purity of the product was 99%. NMR data for the product using the embodiment of the present invention is the NMR identified the product as follows:The specific reaction procedure and the operation method were the same as in Example 27, and the yield was 71%, and the purity of the product was 99%. The product was subjected to nuclear magnetic identification using the manner described in the present invention, and the NMR data of the product were as follows:

References:

CN106831389,2017,A Location in patent:Paragraph 0113; 0131-0133

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