Highly adequate oxidative esterification of α-carbonyl aldehydes with alkyl halides in TBAI/TBHP mediated system
作者:Pooja L. Bhargude、Jatin J. Lade、Bhausaheb N. Patil、Kamlesh S. Vadagaonkar、Atul C. Chaskar
DOI:10.1080/00397911.2019.1600193
日期:2019.5.19
synthesis of α-ketoesters from alkyl halides and α-carbonyl aldehydes has been reported under metal-free conditions. The present method involves oxidativeesterification of α-carbonyl aldehydes with alkyl halide using TBAI as a promoter and TBHP as an oxidant to form α-ketoesters in good to excellent yields with versatile structural diversity. Use of commercially accessible and inexpensive substrates, broad
2-Oxo promoted hydrophosphonylation & aerobic intramolecular nucleophilic displacement reaction
作者:Satyanarayana Battula、Narsaiah Battini、Deepika Singh、Qazi Naveed Ahmed
DOI:10.1039/c5ob01310k
日期:——
the tervalent phosphite form towards 2-oxoaldehydes in the synthesis of α-hydroxy-β-oxophosphonates. The in situ activated α-C–H atom of α-hydroxy-β-oxophosphonates sustains aerobic intramolecularnucleophilicdisplacement in a curious way to produce α-oxoester.
Metal-Free Oxidative Esterification of Ketones and Potassium Xanthates: Selective Synthesis of α-Ketoesters and Esters
作者:Xianglin Luo、Runfa He、Qiang Liu、Yanping Gao、Jingqing Li、Xiuwen Chen、Zhongzhi Zhu、Yubing Huang、Yibiao Li
DOI:10.1021/acs.joc.9b03272
日期:2020.4.17
A novel and efficient oxidative esterification for the selectivesynthesis of α-ketoesters and esters has been developed under metal-free conditions. In the protocol, various α-ketoesters and esters are available in high yields from commercially available ketones and potassium xanthates. Mechanistic studies have proven that potassium xanthate not only promotes oxidative esterification but also provides
I<sub>2</sub>-promoted cross-dehydrogenative coupling of α-carbonyl aldehydes with alcohols for the synthesis of α-ketoesters
作者:A. Sagar、Shinde Vidyacharan、Duddu S. Sharada
DOI:10.1039/c4ra06028h
日期:——
A facile and efficient method for the synthesis of α-ketoesters from alcohols and α-carbonyl aldehydes has been developed at room temperature under metal-free conditions for the first time. Various alcohols and α-carbonyl aldehydes could participate in this reaction to afford the desired products in excellent yields.