Sodium Hydroxide → 5-(4-n-Nonylbenzoyl)pentanoic acid

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Reaction Steps

Adipic acid monomethyl ester (50 g; 0.31 mole) is converted to the acid chloride with thionyl chloride (50 g) in the manner described in Example 1. This product is reacted with nonylbenzene (400 ml) and aluminum chloride (80 g; 0.6 mole) and the product purified in a manner analogous to that described in Example 1 to provide methyl 5-(4-n-nonylbenzoyl)pentanoate (35.2 g). This ester (35 g) is hydrolysed with sodium hydroxide in aqueous ethanol as in Example 1 to give, on recrystallization from aqueous ethanol, 5-(4-n-nonylbenzoyl)pentanoic acid (24 g) as colorless crystals, m.p. 29°-31° C.

Provenance & Evidence