dicarboxylsyre

Dicarboxylsyre is a class of organic compounds that contain two carboxyl functional groups (COOH) within the same molecule. These groups are typically separated by a carbon chain, which can vary in length and structure. The simplest dicarboxylsyre are the saturated aliphatic dicarboxylsyre, often referred to as the oxalic acid series, which have the general formula HOOC-(CH2)n-COOH. Examples include oxalic acid (n=0), malonic acid (n=1), succinic acid (n=2), and glutaric acid (n=3).

The properties of dicarboxylsyre vary depending on the length of the carbon chain and the presence of any other functional groups. Generally, they are acidic, with the acidity influenced by the distance between the carboxyl groups. Shorter chain dicarboxylsyre tend to be stronger acids. Many dicarboxylsyre are crystalline solids at room temperature and exhibit solubility in water, which decreases as the hydrocarbon chain length increases.

Dicarboxylsyre play important roles in biological systems. For instance, succinic acid is a key intermediate in the citric acid cycle, a fundamental metabolic pathway for energy production in aerobic organisms. Other dicarboxylsyre are used as monomers in the production of polymers such as polyesters and polyamides. They also find applications in the food industry as acidulants and preservatives, and in the pharmaceutical industry for synthesis of various drugs. Dicarboxylsyre can be synthesized through various methods, including oxidation of cyclic hydrocarbons or diols, and hydrolysis of dinitriles.