One-Pot Synthesis of Phenacyl Esters from Acetophenone, [Bmim]Br<sub>3</sub>, and Potassium Salts of Carboxylic Acids Under Solvent-Free Conditions
作者:Zhang-Gao Le、Zong-Bo Xie、Jian-Ping Xu
DOI:10.1080/00397910802431115
日期:2009.1.28
Abstract One-pot synthesis of phenacyl esters from acetophenone, [Bmim]Br3, and potassium salts of carboxylic acids under solvent-free conditions gave the corresponding phenacyl esters with excellent yields.
I<sub>2</sub>/TBHP-mediated oxidative coupling of ketones and toluene derivatives: a facile method for the preparation of α-benzoyloxy ketones
作者:Cui Chen、Weibing Liu、Peng Zhou、Hailing Liu
DOI:10.1039/c7ra02298k
日期:——
An efficient oxidative approach was developed for the α-benzoyloxylation of ketones using tert-butyl hydroperoxide (TBHP). This process provided facile access to a wide range of α-benzoyloxy ketones in good to excellent yields via the direct oxidative α-benzoyloxylation of a structurally diverse series of ketones using simple arylmethane compounds.
Oxidation-hydroxymethylation-reduction: a one-pot three-step biocatalytic synthesis of optically active α-aryl vicinal diols
作者:Saravanakumar Shanmuganathan、Dessy Natalia、Lasse Greiner、Pablo Domínguez de María
DOI:10.1039/c1gc16092c
日期:——
A one-pot multi-step approach comprising enzymatic oxidation-hydroxymethylation-reduction enables the synthesis of opticallyactive α-aryl vicinal diols with high yields and enantioselectivities. Formaldehyde required for the hydroxymethylation step is enzymatically produced in situ using less hazardous methanol as substrate.
Construction of α-Acyloxy Ketones via Photoredox-Catalyzed O–H Insertion of Sulfoxonium Ylides with Carboxylic Acids
作者:Qing Sun、Yuzhu Peng、Yujing Wang、Xiaoguang Bao
DOI:10.1021/acs.orglett.3c02221
日期:2023.9.15
sulfoxonium ylides with carboxylic acids was advanced under mild and simple conditions, offering a practical approach for preparing α-acyloxy ketones with a broad scope of carboxylic acids. A combined experimental and computational study suggests that this reaction proceeds via a stepwise proton-assisted electron transfer mechanism.
Metal-free synthesis of α-acyloxy ketones from carboxylic acids and sulfoxonium ylides
作者:Naveen Kumar、Satyendra Kumar Pandey
DOI:10.1039/d3ob01683h
日期:——
described for synthesizing α-acyloxy ketonesfrom β-ketosulfoxonium ylides and carboxylic acids. Moderate to high yields of α-acyloxy ketones were produced using sulfoxonium ylides and carboxylic acids adorned with various functional groups. Eventually, the applicability of this approach has been shown via a large-scale reaction and transforming the synthesized α-acyloxy ketone derivatives into other valuable