 a mild 
 catalytic asymmetric direct fluoro - arylation of styrenes 
 has been developed . 
 the palladium - catalyzed three - component coupling 
 of selectfluor , a styrene and a boronic acid , provides chiral monofluorinated 
 compounds in good yield and in high enantiomeric excess . 
 a mechanism 
 proceeding through a pd(iv)-fluoride intermediate is proposed for 
 the transformation and synthesis of an sp3 c  f bond . 
Supplementary Material