Substrate Evaluation of<i>Rhodococcus erythropolis</i>SET1, a Nitrile Hydrolysing Bacterium, Demonstrating Dual Activity Strongly Dependent on Nitrile Sub-Structure
作者:Tracey M. Coady、Lee V. Coffey、Catherine O'Reilly、Claire M. Lennon
DOI:10.1002/ejoc.201403201
日期:2015.2
Rhodococcus erythropolis SET1, a novel nitrilehydrolysing bacterial isolate, has been undertaken with 34 nitriles, 33 chiral and 1 prochiral. These substrates consist primarily of β-hydroxy nitriles with varying alkyl and aryl groups at the β position and containing in several compounds different substituents α to the nitrile. In the case of β-hydroxy nitriles without substitution at the α position
Direct, facile synthesis of acyl azides and nitriles from carboxylic acids using bis(2-methoxyethyl)aminosulfur trifluoride
作者:Cyrous O. Kangani、Billy W. Day、David E. Kelley
DOI:10.1016/j.tetlet.2007.06.119
日期:2007.8
A mild, efficient, and practical method for the one-step synthesis of acyl azides from carboxylic acids using bis(2-methoxyethyl)aminosulfur trifluoride is described. The reaction was easily extended to the synthesis of the corresponding nitriles by the inclusion of phosphorous reagents. The method can be applied to the synthesis of optically active nitriles in high yields, and is compatible with fluorous
A Chiral Metal-Organic Material that Enables Enantiomeric Identification and Purification
作者:Shi-Yuan Zhang、Cheng-Xiong Yang、Wei Shi、Xiu-Ping Yan、Peng Cheng、Lukasz Wojtas、Michael J. Zaworotko
DOI:10.1016/j.chempr.2017.07.004
日期:2017.8
coupled with the thermal and hydrolytic stability of CMOM-3S, these features mean that a coated fusedsilicacapillarycolumn in which CMOM-3S serves as a CSP is both more versatile and more robust than three benchmark commercial columns. That the enantiomer with the longer GC retention time is consistently captured in CCS experiments enables CMOM-3S to serve as a powerful tool to enable both chiral purification
Enantiomer Separation of Nitriles and Epoxides by Crystallization with Chiral Organic Salts: Chirality Switching Modulated by Achiral Acids
作者:Koichi Kodama、Yuki Shimomura、Takuji Hirose
DOI:10.1021/acs.cgd.1c01003
日期:2021.11.3
with organic-salt type chiral hosts was achieved. The stereochemistry of the preferentially included nitrile could be switched only by changing the achiral carboxylic acid component. Crystallographic analysis of the inclusion crystals reveals that the hydrogen-bonding networks are controlled by the acidity of the phenol group of the acids, which results in chiralityswitching.
Dual electrocatalysis enables enantioselective hydrocyanation of conjugated alkenes
作者:Lu Song、Niankai Fu、Brian G. Ernst、Wai Hang Lee、Michael O. Frederick、Robert A. DiStasio、Song Lin
DOI:10.1038/s41557-020-0469-5
日期:2020.8
Chiralnitriles and their derivatives are prevalent in pharmaceuticals and bioactive compounds. Enantioselective alkene hydrocyanation represents a convenient and efficient approach for synthesizing these molecules. However, a generally applicable method featuring a broad substrate scope and high functional group tolerance remains elusive. Here, we address this long-standing synthetic problem using