6744-65-6Relevant articles and documents
Chromium-catalysed efficient: N -formylation of amines with a recyclable polyoxometalate-supported green catalyst
Dan, Demin,Chen, Fubo,Zhao, Whenshu,Yu, Han,Han, Sheng,Wei, Yongge
supporting information, p. 90 - 94 (2021/01/11)
A simple and efficient protocol for the formylation of amines with formic acid, catalyzed by a polyoxometalate-based chromium catalyst, is described. Notably, this method shows excellent activity and chemoselectivity for the formylation of primary amines; diamines have also been successfully employed. Importantly, the chromium catalyst is potentially non-toxic, environmentally benign and safer than the widely used high valence chromium catalysts such as CrO3 and K2Cr2O7. The catalyst can be recycled several times with a negligible impact on activity. Finally, a plausible mechanism is provided based on the observation of intermediate and control experiments.
An efficient way for the: N -formylation of amines by inorganic-ligand supported iron catalysis
Wu, Zhikang,Zhai, Yongyan,Zhao, Wenshu,Wei, Zheyu,Yu, Han,Han, Sheng,Wei, Yongge
supporting information, p. 737 - 741 (2020/02/25)
The first example of an inorganic-ligand supported iron(iii) catalysed coupling of formic acid and amines to form formamides is reported. The pure inorganic catalyst (NH4)3[FeMo6O18(OH)6] (1), which consists of a central FeIII single-atomic core supported within a cycle-shaped inorganic ligand consisting of six MoVIO6 octahedra, shows excellent activity and selectivity, and avoids the use of complicated/commercially unavailable organic ligands. Various primary amines and secondary amines have been successfully transformed into the corresponding formamides under mild conditions, and the formylation of primary diamines has also been achieved for the first time. The Fe catalyst 1 can be reused several times without appreciable loss of activity.
Metal-free Carbon Monoxide (CO) Capture and Utilization: Formylation of Amines
Noh, Hyeong-Wan,An, Youngjoon,Lee, Seulchan,Jung, Jaehoon,Son, Seung Uk,Jang, Hye-Young
, (2019/04/26)
The capture and utilization of CO by 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) were performed in the absence of transition-metal complexes. The reaction of TBD with CO afforded TBD-CO adducts, which were converted to formylated TBD (TBD-CHO). TBD-CO adducts may include an interaction of CO with positively charged species based on NMR and IR analysis. In the presence of amines, CO was transferred from TBD-CO to amines, producing formylated amines with good yields. The reaction mechanism involving TBD-CO adducts is presented based on theoretical calculations. (Figure presented.).
