(oxygen defect site) to give OHδ and Hδ+ species on the site, (2) formation of an adsorption complex between nitrile and CeO2, (3) addition of OHδ to the carbon atom of the cyano group of the complex and (4) desorption of the amide from the CeO2 surface, accompanying a ...
Sign in to download full-size image Scheme 14.Nitrile hydrolysis by whole cells fromRhodococcussp.110 Table 1.Isolated yields and ee values for nitrile hydrolysis by whole cells fromRhodococcussp. (after a reaction time of 24h)110 EntrySubstrateNitrile %Amide %Acid %Microorganism ...
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Remember, this is a nucleophilic addition of your cyanide ion to either an aldehyde or a ketone. And then finally, we have amide dehydration. Here we have a reaction of an amide with a dehydrating agent. Typically, we're using Diphosphorus Pentoxide, so P2O5 or we're using P...
As a benchmark reaction, the hydrogenation of 4-chlorobenzonitrile (1) to 4-chlorobenzylamine (2) was chosen (Fig.3), not only to identify an active catalyst system, but also a selective one. Notably,1easily undergoes reductive dehalogenation in the presence of many known hydrogenation catalysts...
ChemInform Abstract: NITRILE‐FORMAMIDE ADDUCTS. 4. REACTION OF NITRILE‐FORMAMIDE ADDUCTS. SYNTHESIS OF N‐THIOACYLAMIDE DERIVATIVES AND AZA ANALOGS OF THIOPYRYLIUM SALTSthiazine derivativesBei Einwirkung von Na-thiosulfat auf die Immoniumsalze (I) entstehen die Thioacylformamidine (II).doi:10.1002...
Ortho-substituted nitrile (entry 12) was also found to show excellent yield of corresponding amide. However, nitrile containing electron donating groups like p-Me (entry 5) gave only poor conversion. Interestingly, our catalyst could also tolerate some heteroaromatic nitriles that are usually ...
These Lewis acidic centres can probably also be gener- ated on the silica support close to the nanoparticles by reaction with Si–OH sites on the surface. Notably, catalytic (substoichiometric) amounts (20 mol%) of the aluminium additives were sufficient to achieve improved yields. Under the...
2. A method as claimed in claim 1, wherein the concentration of the amide and organic acid or the salt thereof in the suspension or solution is in the range of from 0.01 to 50 g/l. 3. A method as claimed in claim 1, wherein the pH of the suspension or solution is in the ran...
An improved process for catalytically hydrolyzing a nitrile to a corresponding amide which employs a reduced copper and another reduced metal catalyst. This catalyst is prepared by precipitating from