A new diastereoselective 3+2 annulation approach to five-membered carbocycles

Article abstract of DOI:10.1016/S0040-4039(00)94468-X

The newly prepared 1-bromo-2-methylene-3-phenylsulfonylpropane 2 reacts with α,β unsaturated esters in a Michael induced ring closure to provide cyclopentane derivatives with complete diastereoselectivity.