The rhenium complexes (eta 5-C5H5)Re(NO)(PPh3)((CH2)nPR2:) (n/R = 0/Ph, 0/t-Bu, 0/Me, 1/Ph, 1/t-Bu), which contain electron-rich and sterically congested phosphido moieties, give active catalysts for the title reaction; typical conditions (toluene, 60-100 degrees C): aryl bromide (1.0 equiv.), PhB(OH)2 (1.5 equiv.), K3PO4 (2.0 equiv.), Pd(OAc)2 (1 mol%), and a Re(CH2)nPR2: species or a 1:2 [Re(CH2)nPR2H]+X-/t-BuOK
complex络合物(η5-
C5H5)Re(NO)(PPh3)((
CH2)nPR2 :)(n / R = 0 / Ph,0 / t-Bu,0 / Me,1 / Ph,1 / t- Bu),其中含有丰富的电子且在空间上拥挤的
磷酰基部分,为标题反应提供了活性催化剂;典型条件(
甲苯,60-100摄氏度):芳基
溴(1.0当量),PhB(OH)2(1.5当量),K3PO4(2.0当量),Pd(OAc)2(1摩尔%),和Re( )nPR2:物质或1:2 [Re( )nPR2H] + X- / t-BuOK混合物(4摩尔%ium)。