The conversion of ketones to esters has been achieved through the use of Cu catalyst and tetrabutylammonium nitrite. This reaction involves the activation of the less activated C-C bond, and the alkyl group is removed as a leaving group. Various isopropyl ketones are found to be good substrates for this reaction.
[reaction: see text] Diaryl-, divinyl-, and dialkylindium proved to be stable in aqueous media and to undergo a palladium-catalyzedcross-couplingreaction with arylhalides in aqueous THF. Treatment of 3-iodophenol with diphenylindium compound, generated from indium trichloride and two equimolar amounts of a phenyl Grignard reagent, in aqueous media under palladium catalysis provided the corresponding
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
Disclosed herein are compounds of Formula (I) that include a sulfonate ester, ester or ether group. Compounds of Formula (I) can be included in pharmaceutical compositions, and can be used to treating and/or ameliorating a disease or condition, such as cancer, a microbial disease and/or inflammation.
Suzuki-Miyaura Cross-Coupling Reactions in Flow: Multistep Synthesis Enabled by a Microfluidic Extraction
作者:Timothy Noël、Simon Kuhn、Andrew J. Musacchio、Klavs F. Jensen、Stephen L. Buchwald
DOI:10.1002/anie.201101480
日期:2011.6.20
Continuous success: A continuous‐flowSuzuki–Miyaura cross‐coupling reaction starting from phenols was made possible through use of an efficient microfluidicextraction operation and a packed‐bed reactor. Various biaryls were obtained in excellent yield (14 examples). TBAB=Bu4N+Br−.