Abstract
A review. The syntheses of four-membered carbocycles are much less described than those of three-membered ones. Because of the nature of their structures, domino approaches are clearly the methods of choice for their construction. Among them, transition-metal- and organo-catalyzed strategies are clearly the most popular ones, allowing the stereoselective construction of contiguous stereogenic centers in high selectivities, though catalytic and asym. approaches are mainly described using organocatalyts in MIRC processes.