Di-tert-butyl Peroxide (DTBP)-Mediated Oxysilylation of Unsaturated Carboxylic Acids for the Synthesis of Silyl Lactones

Herein, we describe the first oxysilylation of unsaturated carboxylic acids mediated by di-tert-butyl peroxide (DTBP), which enables the rapid and efficient preparation of silyl lactone compounds. This process tolerates functional groups, such as methyl, methoxy, halogen (fluoride and chloride), and cyano moieties. Furthermore, the strategy allows the application of a wide range of primary, secondary, and tertiary hydrosilanes for functionalization.