Synthesis of Polysubstituted Alkenes by Heck Vinylation or Suzuki Cross??Coupling Reactions in the Presence of a Tetraphosphane− Palladium Catalyst

~67%

~%

~%

~97%

~77%

~83%

~85%

~77%

~85%

~55%

~84%

~78%

~93%

~89%

~60%

~%

~%

~86%