3,3-Dichloroacrylic Acid丨CAS 1561-20-2

3,3-Dichloroacrylic acid (CAS 1561-20-2) is a reactive halogenated acrylic acid used primarily as an intermediate in organic synthesis and fine chemical production. It is applied in the manufacture of agrochemical intermediates, pharmaceuticals, and specialty chemicals where the dichloro-substituted vinyl group enables further functionalization. The compound is also used in the synthesis of heterocycles and chlorinated derivatives through addition, substitution, or cyclization reactions. In polymer and material chemistry, 3,3-dichloroacrylic acid can be utilized to introduce reactive carboxylic and vinyl functionalities into polymer backbones or side chains, supporting the development of functional resins, coatings, and specialty polymers. Additionally, it serves as a useful research reagent for studying halogenated unsaturated acids and their reactivity patterns.

The benefits of 3,3-dichloroacrylic acid arise from its high chemical reactivity, structural versatility, and dual functional groups. The presence of both a carboxylic acid and a dichloro-substituted double bond allows selective transformations, enabling efficient synthesis of a wide range of derivatives. The chlorine atoms enhance electrophilicity and facilitate substitution or elimination reactions, providing flexibility in downstream chemical design. Its relatively small molecular structure supports high atom efficiency in synthesis, while its compatibility with standard organic reaction conditions allows straightforward integration into existing synthetic routes. These characteristics make it a valuable intermediate for developing complex molecules in agrochemical, pharmaceutical, and materials research.