29083-69-0Relevant academic research and scientific papers
A High-Throughput Screening Method for the Directed Evolution of Hydroxynitrile Lyase towards Cyanohydrin Synthesis
Zheng, Yu-Cong,Ding, Liang-Yi,Jia, Qiao,Lin, Zuming,Hong, Ran,Yu, Hui-Lei,Xu, Jian-He
, p. 996 - 1000 (2021/01/15)
Chiral cyanohydrins are useful intermediates in the pharmaceutical and agricultural industries. In nature, hydroxynitrile lyases (HNLs) are a kind of elegant tool for enantioselective hydrocyanation of carbonyl compounds. However, currently available methods for demonstrating hydrocyanation are still stalled at precise, but low-throughput, GC or HPLC analyses. Herein, we report a chromogenic high-throughput screening (HTS) method that is feasible for the cyanohydrin synthesis reaction. This method was highly anti-interference and sensitive, and could be used to directly profile the substrate scope of HNLs either in cell-free extract or fermentation clear broth. This HTS method was also validated by generating new variants of PcHNL5 that presented higher catalytic efficiency and stronger acidic tolerance in variant libraries.
Substrate-Independent High-Throughput Assay for the Quantification of Aldehydes
Ressmann, Anna K.,Schwendenwein, Daniel,Leonhartsberger, Simon,Mihovilovic, Marko D.,Bornscheuer, Uwe T.,Winkler, Margit,Rudroff, Florian
supporting information, p. 2538 - 2543 (2019/04/16)
The selective and direct reduction of carboxylic acids into the corresponding aldehydes by chemical methods is still a challenging task in synthesis. Several reductive and oxidative chemical methods are known to produce aldehydes, but most of them require
A New type of Dimroth Rearrangement: Formation of 1,2-Dihydro-3H-quinazolone 4-Oximes from 4-Amino-1,2-dihydroquinazoline 3-Oxides
Korbonits, Dezsoe,Kolonits, Pal
, p. 2163 - 2168 (2007/10/02)
Contrary to earlier claims the primary product of the reaction of aldehydes and o-aminobenzamide oxime is, irrespective of the aldehyde, always a 4-amino-1,2-dihydroquinazoline 3-oxide.Thermolysis of 1-unsubstituted 2-substituted quinazoline 3-oxides (5) in solution or in melt gives rise, by a new type of Dimroth rearrangement, to the isomeric 1,2-dihydro-4-quinazolone oximes (6), while the 1-benzyl 2-unsubstituted analogue (9j) yields, presumably by an addition-elimination ring transformation coupled with oxidation, a quinoidal quinazolone 4-oxime (17).
