Carbon Monoxide Bond Cleavage Mediated by an Intramolecular Frustrated Lewis Pair: Access to New B/N Heterocycles via Selective Incorporation of Single Carbon Atoms

2021 ◽  
Author(s):  
Clemens Krempner ◽  
Chamila Manankandayalage ◽  
Daniel K Unruh

Utilizing an intramolecular frustrated Lewis pair (FLP) decorated with a strongly donating guanidino moiety enabled the formation of a thermally remarkably stable FLP-CO adduct, which at 120°C underwent CO migration...

RSC Advances ◽  
2021 ◽  
Vol 11 (45) ◽  
pp. 28420-28432
Author(s):  
Miho Isegawa ◽  
Takahiro Matsumoto ◽  
Seiji Ogo

Hydrogen is a clean fuel alternative to fossil fuels, and it is vital to develop catalysts for its efficient activation and production.


2020 ◽  
Vol 132 (30) ◽  
pp. 12577-12583
Author(s):  
Jun Li ◽  
Christian Mück‐Lichtenfeld ◽  
Constantin G. Daniliuc ◽  
Gerald Kehr ◽  
Gerhard Erker

2020 ◽  
Vol 59 (12) ◽  
pp. 4897-4901 ◽  
Author(s):  
Andreas Heilmann ◽  
Jamie Hicks ◽  
Petra Vasko ◽  
Jose M. Goicoechea ◽  
Simon Aldridge

2016 ◽  
Vol 128 (32) ◽  
pp. 9362-9365 ◽  
Author(s):  
Ke‐Yin Ye ◽  
Gerald Kehr ◽  
Constantin G. Daniliuc ◽  
Lei Liu ◽  
Stefan Grimme ◽  
...  

2012 ◽  
Vol 65 (2) ◽  
pp. 129 ◽  
Author(s):  
Jean-Baptiste Bossa ◽  
Fabien Borget ◽  
Fabrice Duvernay ◽  
Grégoire Danger ◽  
Patrice Theulé ◽  
...  

Solid-phase methylamine (CH3NH2) was vacuum ultraviolet (VUV) photoprocessed at low temperature (20 K) using a hydrogen flow discharge lamp, which allows irradiation down to 120 nm. Methanimine (CH2=NH), the methylammonium cation (CH3NH3+) and the counterion CN–, as well as the amino radical (NH2), methane (CH4) and ammonia (NH3), were identified as the photoproducts by using FTIR spectroscopy. So far, the branching ratios of the photodissociation pathways of methylamine in the solid phase remain unknown. The methylamine molecule holds two non-equivalent hydrogen atoms on the methyl and the amino group, so we can expect the formation of two distinct radicals via a carbon–hydrogen or a nitrogen–hydrogen bond cleavage, namely CH2NH2 and CH3NH. These radicals are highly reactive and may reform methylamine with hydrogen atom recombination. Their direct infrared spectroscopic detection is therefore tricky. To solve that problem, we use carbon monoxide (CO) as an H radical scavenger, forming the intermediate species HCO. After the irradiation of a CH3NH2 : CO binary ice mixture, formamide (NH2CHO) and N-methylformamide (CH3NHCHO) were identified as the main photoproducts using both infrared and mass spectrometry. We give a rough approximation of the branching ratios, which are in agreement with previous studies in the gas phase.


Author(s):  
Xiongfei Zheng ◽  
Ili Zulkifly ◽  
Andreas Heilmann ◽  
Caitilín McManus ◽  
Simon Aldridge

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