硬币金属氨基和硫醇盐SNS配合物：铜（I）催化羰基硼氢化反应中催化剂形态的影响

Coinage metal amido and thiolate SNS complexes: consequences of catalyst speciation in Cu(I)-catalysed carbonyl hydroboration.

作者信息

Ataie Saeed, Lohoar Maxwell, Mangin Loïc P, Baker R Tom

机构信息

Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada.

Department of Chemistry, Dalhousie University, 6274 Coburg Road, PO Box 15000, Halifax, Nova Scotia, B3H 4R2, Canada.

出版信息

Chem Commun (Camb). 2023 Mar 30;59(27):4044-4046. doi: 10.1039/d2cc06077a.

DOI:10.1039/d2cc06077a

PMID:36928477

Abstract

Three new IPr-Ag- and -Au-SNS amido and thiolate complexes were synthesized and compared to their previously reported Cu analogues as carbonyl hydroboration catalysts (IPr = bis(2,6-diisopropylphenyl)imidazol-2-ylidene). Although these complexes showed no catalytic activity, treatment of the IPr-Ag-SNS amido complex with pinacolborane released the -borylated ligand, SNS, (L1-Bpin). This finding led us to reinvestigate the IPr-Cu-SNS amido precatalyst, revealing that immediate loss of L1-Bpin converts our catalyst system to [CuH(IPr)].

摘要

合成了三种新型的IPr-Ag-和-Au-SNS酰胺和硫醇盐配合物，并将其与之前报道的作为羰基硼氢化催化剂的铜类似物进行比较（IPr = 双（2,6-二异丙基苯基）咪唑-2-亚基）。尽管这些配合物没有显示出催化活性，但用频哪醇硼烷处理IPr-Ag-SNS酰胺配合物会释放出硼化配体SNS（L1-Bpin）。这一发现促使我们重新研究IPr-Cu-SNS酰胺前催化剂，结果表明L1-Bpin的立即损失会将我们的催化剂体系转化为[CuH(IPr)]。