24dichlorophenyl

24dichlorophenyl, commonly written as 2,4-dichlorophenyl, is the phenyl substituent bearing chlorine atoms at the 2 and 4 positions of the benzene ring. As a substituent, it is attached to a larger molecule through the ring carbon at the point of connection, and has the approximate formula C6H3Cl2-. The presence of chlorine atoms makes the ring more electron-withdrawing and lipophilic compared with the unsubstituted phenyl group, influencing reactivity, potency, and metabolic stability in downstream compounds. The 2,4-dichlorophenyl group occurs in a range of industrial and pharmaceutical chemicals; notably, it is the aryl portion of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) and is found in various dyes, polymers, and agrochemical intermediates.

In terms of properties, derivatives vary, but compounds containing the 2,4-dichlorophenyl moiety typically show limited water solubility and moderate to high lipophilicity. The group influences the outcome of reactions at adjacent positions and can affect the electronic characteristics of the attached framework. The 2,4-dichlorophenyl moiety is commonly encountered in synthetic chemistry as a building block for more complex molecules.

Safety and environmental considerations: chlorinated phenyl rings can be associated with toxicity and persistence in the environment. Specific hazards depend on the full compound, but many 2,4-dichlorophenyl derivatives are subject to regulatory oversight and handling precautions. Related isomers include 2,3-dichlorophenyl and 3,4-dichlorophenyl, which differ in reactivity and applications.