 an 
 efficient method for the construction of csp2csp3 bond in a regio- and stereoselective fashion involving 1,3-terminal 
 dienes , enol triflates / nonaflates , and sodium formate under pd(0)-catalysis 
 is described . 
 the three component assembly allows trapping of a -allyl 
 intermediate , after the initial migratory insertion of the diene , 
 by a hydride source that leads to structurally complex and synthetically 
 challenging tri- and tetrasubstituted alkene building blocks . 
Supplementary Material