Multi-component coupling reactions based on the additions of cation pools to carbon-carbon multiple bonds

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Multi-component coupling reactions, especially three-component reactions based on the sequential additions of nucleophiles and electrophiles to carbon-carbon multiple bonds are quite important to provide a variety of organic compounds ; however, there are few examples of the reactions initiated by the additions of carbocations to carbon-carbon multiple bonds. In this project, we focus on the development of this type of cationic multi-component couplings on the basis of the cattion pool method. We have developed a new method to construct a substituted tetrahydrofuran ring in a highly stereoselective manner by using intramolecular cationic carbo-hydroxylation, and a method to provide chiral diamino alcohols which is based on the sequential C-C bond formations initiated by the addition of a cation pool to an enamide.