Metamethoxybenzaldehyde

Metamethoxybenzaldehyde, also known as 3-methoxybenzaldehyde or m-methoxybenzaldehyde, is an organic compound with the chemical formula C8H8O2. It is a derivative of benzaldehyde where a methoxy group (-OCH3) is attached to the meta position of the benzene ring. This compound is a colorless to pale yellow liquid with a characteristic almond-like odor, though often described as milder and more floral than unsubstituted benzaldehyde.

Metamethoxybenzaldehyde is primarily used as a chemical intermediate in the synthesis of various organic compounds. Its reactivity stems from both the aldehyde functional group and the electron-donating methoxy substituent on the aromatic ring. It finds application in the pharmaceutical industry for the production of certain drugs and in the fragrance and flavor industry. It can be employed in the synthesis of dyes and other fine chemicals.

The preparation of metamethoxybenzaldehyde typically involves the oxidation of 3-methoxybenzyl alcohol or the formylation of anisole. It is soluble in many organic solvents like ethanol and ether, but sparingly soluble in water. Due to its aldehyde functionality, it can undergo typical aldehyde reactions such as oxidation, reduction, and condensation reactions.