In the reaction of cis-(CO)4(SnPh3)Re[C(OEt)NR2] (R ipr (isopropyl), chex (cyclohexyl)) with BI3 the Lewis acid attacks the triphenylstannyl ligand. Substitution of a phenyl for a iodine group leads to equilibrium mixtures of rhenium carbene complexes of general formula cis-(CO)4(SnPh3−χIχ)Re[C(OEt)NR2] (χ = 1−3; R ipr, chex). By changing the solvent and ratio of can be shifted such that only one
在的反应顺式- (CO)4(SnPh 3)重新[C(OET)NR 2 ](R我PR(异丙基),C ^十六进制(环己基))与BI 3的
路易斯酸攻击的三苯基
配体。一
碘基团导致通式
铼碳烯配合物的平衡混合物的苯基取代的顺式- (CO)4(SnPh 3-χ我χ)重新[C(OET)NR 2 ](χ= 1-3; R 我pr,c十六进制)。通过改变溶剂,可以改变其比例,从而仅形成一种主要产物。因此,该反应途径可用于制备顺式- (CO)4(SnPhI 2)重新[C(OET)NR 2 ](R我PR,Ç十六进制)。即使当存在大量过量的BI 3时,也未观察到
路易斯酸对卡宾
配体的亲电攻击。