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:
PROCESS FOR PRODUCTION OF OPTICALLY ACTIVE ALCOHOLS
申请人:Nagoya Industrial Science Research Institute
公开号:EP1741693B1
公开(公告)日:2011-08-03
One-pot α-nucleophilic fluorination of acetophenones in a deep eutectic solvent
作者:Zizhan Chen、Wei Zhu、Zubiao Zheng、Xinzhuo Zou
DOI:10.1016/j.jfluchem.2009.11.008
日期:2010.3
Two methods of nucleophilic fluorination to prepare alpha-fluoroacetophenones from alpha-bromoacetophenones by using KF with PEG-400 or TBAF with ZnF2 are described. On the fundamental of nucleophilic fluorination, a novel method of one-pot fluorination to prepare a-fluoroacetophenones directly from acetophenones in DES was developed. (C) 2009 Elsevier B.V. All rights reserved.
Fluorination of α-bromomethyl aryl ketones with fluorohydrogenate-based ionic liquids
作者:Rajendra P. Singh、Jerry L. Martin
DOI:10.1016/j.jfluchem.2015.10.014
日期:2016.1
Fluorination of alpha-bromomethyl aryl ketones using fluorohydrogenate-based ionic liquids as fluorinating reagent is described. Reaction of various alpha-bromomethyl aryl ketones (1a-g) with fluorohydrogenate-based ionic liquids such as EMIMF.(HF)(2.3), PYR13F.(HF)(2.3) or PYR14F.(HF)(2.3) as a fluoride ion source in anhydrous THE led to the formation of the corresponding alpha-fluoromethyl aryl ketones (2a-g) in very good yield. Compared to alternative fluorinating agents for this reaction, fluorohydrogenate-based ionic liquids are safer to handle and have the potential to be less expensive and more selective. (C) 2015 Elsevier B.V. All rights reserved.
Unbalanced-Ion-Pair-Catalyzed Nucleophilic Fluorination Using Potassium Fluoride
作者:Wangbing Li、Zhichao Lu、Gerald B. Hammond、Bo Xu
DOI:10.1021/acs.orglett.1c03887
日期:2021.12.17
An unbalanced ion pair promoter (e.g., tetrabutylammonium sulfate), consisting of a bulky and charge-delocalized cation and a small and charge-localized anion, greatly accelerates nucleophilic fluorinations using easy handling KF. We also successfully converted an inexpensive and commercially available ion-exchange resin to the polymer-supported ion pair promoter (A26–SO42–), which could be reused