[HN Gopher] New nitrogen products are in the air
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       New nitrogen products are in the air
        
       Author : apsec112
       Score  : 29 points
       Date   : 2020-08-23 21:32 UTC (1 hours ago)
        
 (HTM) web link (news.yale.edu)
 (TXT) w3m dump (news.yale.edu)
        
       | ttul wrote:
       | https://www.nature.com/articles/s41586-020-2565-5
       | 
       | The activation of abundant molecules such as hydrocarbons and
       | atmospheric nitrogen (N2) remains a challenge because these
       | molecules are often inert. The formation of carbon-nitrogen bonds
       | from N2 typically has required reactive organic precursors that
       | are incompatible with the reducing conditions that promote N2
       | reactivity1, which has prevented catalysis. Here we report a
       | diketiminate-supported iron system that sequentially activates
       | benzene and N2 to form aniline derivatives. The key to this
       | coupling reaction is the partial silylation of a reduced iron-
       | dinitrogen complex, followed by migration of a benzene-derived
       | aryl group to the nitrogen. Further reduction releases N2-derived
       | aniline, and the resulting iron species can re-enter the cyclic
       | pathway. Specifically, we show that an easily prepared
       | diketiminate iron bromide complex2 mediates the one-pot
       | conversion of several petroleum-derived arenes into the
       | corresponding silylated aniline derivatives, by using a mixture
       | of sodium powder, crown ether, trimethylsilyl bromide and N2 as
       | the nitrogen source. Numerous compounds along the cyclic pathway
       | are isolated and crystallographically characterized, and their
       | reactivity supports a mechanism for sequential hydrocarbon
       | activation and N2 functionalization. This strategy couples
       | nitrogen atoms from N2 with abundant hydrocarbons, and maps a
       | route towards future catalytic systems.
        
       | donaldcuckman wrote:
       | Hmm
        
       | stevespang wrote:
       | aniline is a potent carcinogen.
        
       | WantonQuantum wrote:
       | I find it interesting that I initially interpreted the headline
       | "New nitrogen products are in the air" as a story about
       | pollution. I.e., new nitrogen products (pollutants) have been
       | detected in the atmosphere.
        
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       (page generated 2020-08-23 23:00 UTC)