4-Cloromethyl-5-methyl-1,3-dioxol-2-one丨CAS 80841-78-7

4-Chloromethyl-5-methyl-1,3-dioxol-2-one (CAS 80841-78-7) is a reactive cyclic carbonate used primarily as an intermediate in organic synthesis, pharmaceutical chemistry, and materials science. The chloromethyl group provides a highly effective site for nucleophilic substitution, enabling the introduction of a wide range of functional groups such as amines, alcohols, and thiols. As a result, this compound is commonly applied in the synthesis of pharmaceutical intermediates, prodrugs, and fine chemicals. In polymer and materials chemistry, it is used to prepare functionalized carbonates and monomers, supporting the development of specialty polymers, crosslinkers, and biodegradable materials. It is also valuable in research focused on cyclic carbonates and protected functional group chemistry.

The benefits of 4-chloromethyl-5-methyl-1,3-dioxol-2-one arise from its high reactivity, structural versatility, and stability. The cyclic carbonate ring offers controlled reactivity and can participate in ring-opening or substitution reactions under mild conditions, while the chloromethyl substituent enables efficient functionalization with good selectivity. The methyl group contributes to improved stability and handling compared with unsubstituted analogues. The compound is compatible with standard organic solvents and common reaction conditions, allowing reproducible synthesis and scalable processing. These features make it a practical and efficient building block for complex molecule construction and functional material design.