Abstract
Merits and drawbacks of known carbon‐carbon linking procedures are outlined. Two novel methods are discussed in some detail: the copper‐catalyzed alkylation of Grignard reagents and reactions with allylpotassium compounds. Both methods provide a very efficient access to saturated, unsaturated, as well as functionally substituted hydrocarbons and moreover permit an astonishing degree of regio‐ and stereoselective control of olefin synthesis.