Palladium-catalysed coupling reactions: (Z)-vinyl (N, N-diisopropyl)carbamate group as an efficient precursor of a (Z)-vinyl triflate function

A (Z)-vinyl (diisopropyl)carbamate group, generated from a Hoppe allylation reaction, was easily transformed either into the corresponding (Z)-vinyl phosphate or (Z)-vinyl triflate function in good yield and high selectivity. It was also shown that the result- ing (Z)-vinyl triflate compound could be utilized successfully in palladium-catalysed coupling reactions with vinyl-, phenyl- and acetylenic tin derivatives, without loss of the (Z)-geometry of the double bond.