Synthesis of α-fluoroketones and α-fluoroenones in aqueous media
作者:Yan He、Xinying Zhang、Nana Shen、Xuesen Fan
DOI:10.1016/j.jfluchem.2013.08.006
日期:2013.12
An efficient synthesis of α-fluoroketones via the nucleophilic fluorination of α-bromoketones in water with TBAF·3H2O as the fluorinating agent was developed in this paper. In addition, a simple and efficient synthesis of α-fluoroenones through the condensation of α-fluoroketones with aldehydes promoted by sodium hydroxide in water was also discovered.
double-enzyme-catalyzed strategy for the synthesis of enantiocomplementary vicinal fluoro alcohols through a one-pot, three-step process including lipase-catalyzed hydrolysis, spontaneous decarboxylative fluorination, and subsequent ketoreductase-catalyzed reduction was developed. With this approach, β-ketonic esters were converted to the corresponding vicinal fluoro alcohols with high isolated yields
A ruthenium complex RuCl[(S,S)-Tsdpen](p-cymene) represented by a formula below and a ketone compound are placed in a polar solvent, and the resulting mixture is mixed under pressurized hydrogen to hydrogenate the ketone compound and to thereby produce an optically active alcohol:
The combination of the catalytic power of photocatalysis and biocatalysis has greatly boosted the development of novel synthetic strategies due to its functional diversity and stereoselective specificity. Herein, we describe a one-potcascadeprocess that combined photo-oxidative fluoridation and bio-reduction to access enantiocomplementary vicinal fluoro alcohols with up to 87% isolated yield and 99%
由于其功能多样性和立体选择性,光催化和生物催化的催化能力的结合极大地促进了新型合成策略的发展。在这里,我们描述了一种单锅级联工艺,该工艺将光氧化氟化和生物还原相结合,以获得高达 87% 的分离产率和 99% ee 的对映互补邻氟醇。
PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE ALCOHOLS