| abstract |
Abstruct of the Disclosure A 1,3-dioxolen-2-one derivative of the general formula wherein R1 represents a hydrogen atom, a methyl group, or an aryl group, R2 represents a hydrogen atom, or may be taken together with R1 to form a divalent carbon chain residue, and X represents a halogen atom. The above compound can be prepared by reacting a compound of the general formula with a halogenating agent, and ia useful as protective group-introducing reagents for introducing protective groups into reagents in various chemical reactions, or as modifiers for prodrug preparation in medicine. |