<i>cis-β</i>-Ruthenium Complexes with Sterically Bulky Salen Ligands: Enantioselective Intermolecular Carbene Insertion into Si–H Bonds and X-ray Crystal Structure of <i>cis-β</i>-[Ru<sup>II</sup>(salen)(CO)(CPh<sub>2</sub>)] Complex
作者:Chi Lun Lee、Daqing Chen、Xiao-Yong Chang、Zhou Tang、Chi-Ming Che
DOI:10.1021/acs.organomet.0c00268
日期:2020.7.27
The synthesis, spectroscopy, crystal structure, and electrochemical behavior of cis-β-RuII(CO)2, cis-β-RuII(CO)(H2O), and cis-β-RuII(CO)(carbene) complexes supported by sterically bulky salen ligands are described, along with the catalytic activity of chiral cis-β-[RuII(salen)(CO)2] complexes toward enantioselective carbene Si–H insertion using N2C(Ar)CO2R as the carbene source under light irradiation
合成,光谱,晶体结构和电化学行为顺式β-钌II(CO)2,顺式β-钌II(CO)(H 2 O),和顺式β-钌II(CO)(卡宾)描述了由体积庞大的Salen配体支持的配合物,以及使用N 2 C(Ar)CO 2的手性顺式β- [Ru II(salen)(CO)2 ]配合物对对映选择性卡宾Si–H插入的催化活性。在光照射下,R作为卡宾源,产品收率高达96%,ee高达84%。该顺β-茹II(CO)(H 2 O)络合物是通过使用带有庞大CPh 3取代基的双萘基Salen配体进行分离的,其中H 2 O分子在与SALEN配体的N亚胺原子反位的位点配位。在具有t Bu取代基的双萘基Salen配体的支持下,对顺-β- Ru II(CO)2络合物进行光照射,然后用N 2 CAr 2(Ar = Ph,p -ClC 6 H 4)处理,得到顺- β- [Ru II(salen)(CO)(CAr 2)],其特征在于将配位的卡宾配体反式转化为Salen