The hydrosilylation reaction between silanes and various carbonyl substrates such as aldehyde, ketone, ester, and carbonate has been catalyzed by Re(CO)5Cl UV photolysis. Kinetic studies have shown that the reaction is favored for the least sterically hindered silanes with aldehydes followed by aliphatic ketones. The IR spectrum of the rhenium carbonyl dimer HRe2(CO)9(SiR3) has been recorded in the
硅烷与各种羰基底物(如醛,酮,酯和
碳酸酯)之间的氢化
硅烷化反应已通过Re(CO)5 Cl UV光解进行了催化。动力学研究表明,对于位阻最小的
硅烷与醛,其次是脂族酮,该反应是有利的。羰基rh二聚体HRe 2(CO)9(SiR 3)的红外光谱已记录在反应混合物中。该络合物被认为是活性催化剂Re(CO)4 SiR 3的静止状态。,可以在激活后释放。已经提出了涉及该物种的催化机理,并通过计算研究显示出其在热力学上是可行的。另外,可以使用相同的机理解释各种羰基底物之间的相对氢化
硅烷化速率。