Hydrogenation of Secondary Amides using Phosphane Oxide and Frustrated Lewis Pair Catalysis
作者:Laura Köring、Nikolai A. Sitte、Markus Bursch、Stefan Grimme、Jan Paradies
DOI:10.1002/chem.202100041
日期:2021.10.13
The metal-free catalytic hydrogenation of secondary carboxylic acid amides is developed. The reduction is realized by two new catalytic reactions. First, the amide is converted into the imidoyl chloride by triphosgene (CO(OCCl3)2) using novel phosphorus(V) catalysts. Second, the in situ generated imidoyl chlorides are hydrogenated in high yields by an FLP-catalyst. Mechanistic and quantum mechanical
开发了仲羧酸酰胺的无金属催化加氢。还原是通过两个新的催化反应实现的。首先,使用新型磷 (V) 催化剂,通过三光气 (CO(OCCl 3 ) 2 )将酰胺转化为亚氨酰氯。其次,原位生成的亚氨酰氯被 FLP 催化剂以高产率氢化。机械和量子力学计算支持氢化的自诱导催化循环,其中氯化物充当不寻常的路易斯碱,用于 FLP 介导的 H 2活化。