PNP-type ligands enabled copper-catalyzed <i>N</i>-formylation of amines with CO<sub>2</sub> in the presence of silanes
作者:Zijie Song、Jun Liu、Shuya Xing、Xinxin Shao、Jiayun Li、Jiajian Peng、Ying Bai
DOI:10.1039/d2ob01986h
日期:——
transformation of carbondioxide into valuable fine chemicals with high efficiency is a global challenge as although CO2 is an abundant, nontoxic, and sustainable carbon feedstock it is also the most important factor behind the Greenhouse Effect. We describe herein a PNP-type ligand-enabled copper-catalyzed N-formylation of amines utilizing CO2 as the building block in the presence of hydrosilane as the reductant
将二氧化碳高效地可持续催化转化为有价值的精细化学品是一项全球性挑战,因为尽管 CO 2是一种丰富、无毒且可持续的碳原料,但它也是温室效应背后最重要的因素。我们在此描述了 PNP 型配体启用的铜催化的胺的N-甲酰化,利用 CO 2作为构建单元,在氢硅烷作为还原剂的情况下。我们目前的协议采用新合成的 PNP 型配体,在温和的反应条件下具有广泛的底物范围。
Catalytic reduction of carbon dioxide by a zinc hydride compound, [Tptm]ZnH, and conversion to the methanol level
作者:Serge Ruccolo、David Sambade、Daniel G. Shlian、Erika Amemiya、Gerard Parkin
DOI:10.1039/d1dt04156h
日期:——
The zinc hydride compound, [Tptm]ZnH, may achieve the reduction of CO2 by (RO)3SiH (R = Me, Et) to the methanol oxidation level, (MeO)xSi(OR)4−x, via the formate species, HCO2Si(OR)3. However, because insertion of CO2 into the Zn–H bond is more facile than insertion of HCO2Si(OR)3, conversion of HCO2Si(OR)3 to the methanol level only occurs to a significant extent in the absence of CO2.