The use of the N-phosphinoamidinato NHC-diborene catalyst 2 for hydroboration is described. N-phosphinoamidine tBu2PN(H)C(Ph)?N(2,6-iPr2C6H3) was reacted with nBuLi in Et2O to afford lithium derivative, which then treated B2Br4(SMe2)2 toluene form N-phosphinoamidinate-bridged diborane 1. It N-heterocyclic carbene IMe (:C{N(CH3)C(CH3)}2) and excess potassium graphite at room temperature give com...