two known addition reactions of the Si-B (silylboration) and the Sn-B compounds (stannylboration) to alkyne^.^ Perhaps prejudice due to the fact that the boron compounds have a relatively high bond energy has precluded investigation in this area. We have recently reported that the additions of catecholborane to alkenes and alkynes are catalyzed by the Pd(O), Rh(I), or Ni(0) c o m p l e x e ~ ~ ~ and
Remarkable Catalytic Property of Nanoporous Gold on Activation of Diborons for Direct Diboration of Alkynes
作者:Qiang Chen、Jian Zhao、Yoshifumi Ishikawa、Naoki Asao、Yoshinori Yamamoto、Tienan Jin
DOI:10.1021/ol4028013
日期:2013.11.15
A novel catalytic property of nanoporous gold for activation of bis(pinacolato)diboron has been reported that allows the direct diboration of alkynes to proceed sufficiently in a heterogeneous process. The experimental results revealed that the nanoporous gold catalyst is able to cleave the B–B bond of bis(pinacolato)diboron without using any additives.