This book about stereoselective synthesis of tetrasubstituted alkenes via torquoselectivity-controlled olefination of carbonyl compounds with ynolates, stereoselective synthesis of z-alkenes, stereoselective synthesis of monofluoroalkenes, recent advances in stereoselective synthesis of 1,3-dienes, selective olefination of carbonyl compounds via metal-catalyzed carbene transfer from diazo reagents, selective alkene metathesis in the total synthesis of complex natural product, olefination reactions of phosphorus-stabilized carbon nucleophiles, and alkene synthesis through transition metal-catalyzed cross-coupling of N-yosylhydrazones.