Catalysts for hydrogenation and hydrosilylation, methods of making and using the same
申请人:Brookhaven Science Associates, LLC
公开号:US06737531B1
公开(公告)日:2004-05-18
A compound is provided including an organometallic complex represented by the formula I:
[CpM(CO)2(NHC)Lk]+A− I
wherein M is an atom of molybdenum or tangsten, Cp is substituted or unsubstituted cyclopentadienyl radical represented by the formula [C5Q1Q2Q3Q4Q5], wherein Q1 to Q5 are independently selected from the group consisting of H radical, C1-20 hydrocarbyl radical, substituted hydrocarbyl radical, halogen radical, halogen-substituted hydrocarbyl radical, —OR, —C(O)R′, —CO2R′, —SiR′3 and —NR′R″, wherein R′ and R″ are independently selected from the group consisting of H radical, C1-20 hydrocarbyl radical, halogen radical, and halogen-substituted hydrocarbyl radical, wherein said Q1 to Q5 radicals are optionally linked to each other to form a stable bridging group, NHC is any N-heterocyclic carbene ligand, L is either any neutral electron donor ligand, wherein k is a number from 0 to 1 or L is an anionic ligand wherein k is 2, and A− is an anion. Processes using the organometallic complex as catalyst for hydrogenation of aldehydes and ketones are provided. Processes using the organometallic complex as catalyst for the hydrosilylation of aldehydes, ketones and esters are also provided.
提供了一种化合物,其中包括由公式I表示的有机金属配合物:[CpM(CO)2(NHC)Lk]+A− I,其中M是钼或钨原子,Cp是由公式[C5Q1Q2Q3Q4Q5]表示的取代或未取代的环戊二烯基基团,其中Q1至Q5分别独立地选自H基团、C1-20烃基基团、取代烃基基团、卤基基团、卤代烃基基团、—OR、—C(O)R′、—CO2R′、—SiR′3和—NR′R″的基团,其中R′和R″分别独立地选自H基团、C1-20烃基基团、卤基基团和卤代烃基基团,其中所述的Q1至Q5基团可以选择地相互连接以形成稳定的桥接基团,NHC是任何N-杂环卡宾配体,L是任何中性电子给体配体,其中k是从0到1的数字,或L是一个带负电的配体,其中k为2,A−是一个阴离子。提供了使用该有机金属配合物作为醛和酮的加氢催化剂的过程。还提供了使用该有机金属配合物作为醛、酮和酯的加硅烷化催化剂的过程。