Nickel-catalyzed addition of P(O)-H bonds to propargyl alcohols: One-pot generation of phosphinoyl 1,3-butadienes

Diphenylphosphine oxide and related P(O)H compounds react with propargyl alcohols at room temperature in the presence of a catalytic amount of Ni(O) complex and Ph2P(O)OH to produce high yields of phosphinoyl 1,3-dienes though an efficient in situ dehydration process.