1naphthoic

1-Naphthoic acid, also known as alpha-naphthoic acid or naphthalene-1-carboxylic acid, is an organic compound with the chemical formula C11H8O2. It is a white crystalline solid and is an isomer of 2-naphthoic acid. The molecule consists of a naphthalene ring system with a carboxylic acid group attached to the alpha (or 1) position.

1-Naphthoic acid is sparingly soluble in water but readily dissolves in many organic solvents such as ethanol, ether, and benzene. It exhibits typical carboxylic acid reactivity, undergoing esterification, amide formation, and reduction. The naphthalene ring system can also undergo electrophilic aromatic substitution reactions.

This compound can be synthesized through various methods, including the oxidation of 1-methylnaphthalene or the carboxylation of 1-naphthylmagnesium bromide (a Grignard reagent derived from 1-bromonaphthalene). It is used as a precursor in the synthesis of dyes, pharmaceuticals, and other fine chemicals. For instance, it can be a building block for certain fluorescent probes or agrochemicals. Its specific applications are often tied to its ability to introduce the naphthyl moiety into larger molecular structures.

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