Preparation of Dicarboxylic Acid -Type Gemini Surfactant via Diels-Alder Reaction & Ozone Oxidation

We wish to report a novel preparation method for Gemsurf analogs as well as dicarboxylic acid type Gemini surfactant from Diels-Alder adducts of 2-trimethylsilyloxy-1,3-butadiene, in which ozone oxidation is adopted to convert C=C double bond to dicarboxylic acid without any additional oxidant.