2011
DOI: 10.1002/ange.201106612
|View full text |Cite
|
Sign up to set email alerts
|

Unprecedented Catalytic Hydrogenation of Urea Derivatives to Amines and Methanol

Abstract: Indirekte CO2‐Hydrierung: Eine Hydrierung von Harnstoffen zu Aminen und Methanol (siehe Bild) wird durch einen RuII‐Pinzettenkomplex mit dreizähnigem bipyridinbasiertem PNN‐Liganden katalysiert und verläuft unter milden, neutralen Bedingungen bei einem H2‐Druck von 13.6 atm. Da sich Harnstoffderivate ausgehend von CO2 erhalten lassen, ermöglicht dieser Ansatz die indirekte Hydrierung von Kohlendioxid zu Methanol.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1

Citation Types

1
28
0
2

Year Published

2012
2012
2022
2022

Publication Types

Select...
9
1

Relationship

1
9

Authors

Journals

citations
Cited by 83 publications
(31 citation statements)
references
References 55 publications
1
28
0
2
Order By: Relevance
“…Their mechanism suggests that the protonation and deprotonation of the benzylic arm is important for hydrogen transfer and the reduction of the carbonate and formaldehyde intermediates to facilitate the generation of MeOH 278. Urea derivatives were also hydrogenated by Cat 1 to amines and MeOH 283. Hydrogenation of 1,3dimethylurea under 1.36 MPa H 2 at 110 °C with 2 mol% Cat 1 produced 93 % yield of MeOH after 72 h. Various alkyl and aryl urea derivatives were also tested, and moderate to good yields were obtained.…”
mentioning
confidence: 99%
“…Their mechanism suggests that the protonation and deprotonation of the benzylic arm is important for hydrogen transfer and the reduction of the carbonate and formaldehyde intermediates to facilitate the generation of MeOH 278. Urea derivatives were also hydrogenated by Cat 1 to amines and MeOH 283. Hydrogenation of 1,3dimethylurea under 1.36 MPa H 2 at 110 °C with 2 mol% Cat 1 produced 93 % yield of MeOH after 72 h. Various alkyl and aryl urea derivatives were also tested, and moderate to good yields were obtained.…”
mentioning
confidence: 99%
“…CO 2 先被固定和 活化得到其衍生物, 然后以衍生物为原料进行化学 转化反应, 也可作为原位催化反应和CCU策略的一 部分, 达到高效节能的目的. 然而, 这些衍生物中羰 基的亲电性较弱, 深度还原也存在一定困难 [107,108] .…”
Section: Co 2 衍生物的催化氢化反应unclassified
“…Milstein nutzt Metallkomplexe zur Aktivierung starker Bindungen mit dem Ziel, neue katalytische Reaktionen und Synthesemethoden zu entwickeln. Kürzlich berichtete er in der Angewandten Chemie über die katalytische Hydrierung von Harnstoffderivaten1a sowie über Katalysen mit Ruthenium‐Pinzettenkomplexen 1b. Milstein gehört den International Advisory Boards von Chemistry—A European Journal und ChemCatChem an…”
Section: Ausgezeichnet …︁unclassified