Aryl halide is a term used in organic chemistry to describe a class of compounds that contain a halogen atom (fluorine, chlorine, bromine, or iodine) attached to an aromatic ring. These compounds are widely used in the chemical industry as intermediates for the synthesis of pharmaceuticals, agrochemicals, and materials.
Definitions
Aryl halides are organic compounds that contain a halogen atom (fluorine, chlorine, bromine, or iodine) attached to an aromatic ring. They are also known as haloarenes, halogenated arenes, or aryl halides. The halogen atom can be attached to any position on the aromatic ring, and the compound can be mono- or polyhalogenated.
Origin
The term aryl halide was first used by the German chemist August Wilhelm von Hofmann in the mid-19th century to describe compounds that contained both an aromatic ring and a halogen atom. The synthesis of aryl halides was first reported by the French chemist Victor Grignard in 1900, who discovered that they could be prepared by reacting an aromatic compound with a halogen in the presence of a metal catalyst.
Meaning in different dictionaries
According to the Merriam-Webster dictionary, aryl halide is “an organic compound that contains a halogen atom attached to an aromatic ring.” The Oxford English Dictionary defines it as “a compound in which a halogen atom is attached to an aromatic ring.”
Associations
Aryl halides are associated with a wide range of chemical reactions, including nucleophilic substitution, electrophilic substitution, and coupling reactions. They are also used as starting materials for the synthesis of a variety of organic compounds, including pharmaceuticals, agrochemicals, and materials.
Synonyms
Some synonyms of aryl halide include haloarene, halogenated arene, halobenzene, and aryl halogen.
Antonyms
There are no specific antonyms for aryl halide, as it is a specific class of compound.
The same root words
The root words of aryl halide are “aryl” and “halide.” Aryl refers to an aromatic ring, while halide refers to a halogen atom.
Example Sentences
- The synthesis of aryl halides is an important step in the production of many pharmaceuticals.
- The reaction of an aryl halide with a nucleophile can result in the substitution of the halogen atom with the nucleophile.
- The use of aryl halides as starting materials in organic synthesis has revolutionized the field of chemical synthesis.