Nickel-Catalyzed Enantioselective Reductive Aryl Fluoroalkenylation of Alkenes
作者:Teng Ma、Yate Chen、Yuxiu Li、Yuanyuan Ping、Wangqing Kong
DOI:10.1021/acscatal.9b03172
日期:2019.10.4
Enantioselective Ni-catalyzed reductive aryl monofluoroalkenylation of alkenes between aryl bromides and gem-difluoroalkenes has been developed. The reaction proceeding under room temperature and base-free reaction conditions tolerates a wide range of functional groups on both coupling partners. Various synthetically useful oxindoles containing monofluoroalkenyl substituent are obtained in good yields with
Efficient Synthesis of α‐Trifluoromethyl Carboxylic Acids and Esters through Fluorocarboxylation of
<i>gem</i>
‐Difluoroalkenes
作者:Woo‐Jin Yoo、Junpei Kondo、José A. Rodríguez‐Santamaría、Thanh V. Q. Nguyen、Shū Kobayashi
DOI:10.1002/anie.201902779
日期:2019.5.13
A facile synthetic procedure for the preparation of α‐trifluoromethyl carboxylic acids and esters was achieved through multicomponent coupling reactions between gem‐difluoroalkenes, cesium fluoride, and carbon dioxide. The products were generated in moderate to excellent yields, and the synthetic utility of this method was demonstrated through the preparation of trifluoromethylated versions of popular
Synthesis of difluoromethylated benzylborons via rhodium(I)-catalyzed fluorine-retainable hydroboration of gem-difluoroalkenes
作者:Yuanhong Cai、Donghang Tan、Qiqi Zhang、Wenxin Lv、Qingjiang Li、Honggen Wang
DOI:10.1016/j.cclet.2020.03.031
日期:2021.1
Abstract The synthesis of borylated organofluorines is of great interest due to their potential values as synthons in modular construction of fluorine-containing molecules. Reported herein is a rhodium-catalyzed hydroboration of aryl gem-difluoroalkenes leading to a series of α-difluoromethylated benzylborons. The use of cationic rhodium catalyst and a biphosphine ligand with large bite angle was crucial
Synthesis of 2-aryl-3,3,3-trifluoropropanoic acids using electrochemical carboxylation of (1-bromo-2,2,2-trifluoroethyl)arenes and its application to the synthesis of β,β,β-trifluorinated non-steroidal anti-inflammatory drugs
作者:Yusuke Yamauchi、Shoji Hara、Hisanori Senboku
DOI:10.1016/j.tet.2009.11.053
日期:2010.1
Electrochemical carboxylation of (1-bromo-2,2,2-trifluoroethyl)arenes resulted in an efficient fixation of carbon dioxide to give the corresponding 2-aryl-3,3,3-trifluoropropanoic acids in good yields, and the present reactions were successfully applied to the synthesis of beta,beta,beta-trifluorinated non-steroidal anti-inflammatory drugs (NSAIDs). (C) 2009 Elsevier Ltd. All rights reserved.