Palladium-Catalyzed Cross-Coupling of Ethyl α-Bromo-α-fluoroacetate with Arylboronic Acids: Facile Synthesis of α-Aryl-α-fluoroacetates
作者:Feng-Ling Qing、Chen Guo、Xuyi Yue
DOI:10.1055/s-0029-1218740
日期:2010.6
Palladium-catalyzed Suzuki-Miyaura coupling reactions of ethyl α-bromo-α-fluoroacetate with various structurally diverse arylboronicacids using a phosphine ligand proceeded smoothly to afford α-aryl-α-fluoroacetates in moderate to good yields. This method provides a practical and efficient route to diverse α-monofluorinated α-arylcarbonyl compounds. cross coupling - fluorinated compounds - boronic
Nickel‐Catalyzed Cross‐Coupling of Ethyl Chlorofluoroacetate with Aryl Bromides
作者:Han Li、Jie Sheng、Bing‐Bing Wu、Yan Li、Xi‐Sheng Wang
DOI:10.1002/asia.202100348
日期:2021.7.5
A combinatorial nickel-catalyzed monofluoroalkylation of aryl bromides with the industrial raw regent ethyl chlorofluoroacetate has been developed. The two key factors to successful conversion are the combination of nickel with readily available nitrogen and phosphine ligands and the using of a mixture of different solvents. Mechanistic investigations indicated a new zinc regent might generated in situ
Palladium‐Catalyzed Monofluoroalkylation of Aryl Iodides and Aryl Bromides with Nucleophilic Ethyl 2‐Fluoro‐2‐(trimethylsilyl)acetate
作者:Kaiting Zheng、Yaomei Liu、Chenggong Zheng、Fangpei Yan、Hua Xiao、Yi‐Si Feng、Shilu Fan
DOI:10.1002/adsc.202101309
日期:2022.3.15
A palladium-catalyzed monofluoroalkylation of aryliodides and arylbromides was developed using nucleophilic ethyl 2-fluoro-2-(trimethylsilyl)acetate as a monofluoroalkyl source. The transformation proceeded with excellent substrate scope to afford a range of monofluoroalkylated products in good yields under mild conditions, and it proved feasible in a gram-scale reaction. This protocol was successfully
Palladium-Catalyzed Cross-Coupling of Ethyl Bromodifluoroacetate with Aryl Bromides or Triflates and Cross-Coupling of Ethyl Bromofluoroacetate with Aryl Iodides
作者:Tingting Xia、Lei He、Yahu A. Liu、John F. Hartwig、Xuebin Liao
DOI:10.1021/acs.orglett.7b00938
日期:2017.5.19
A palladium-catalyzed Negishi cross-coupling reaction of ethyl bromodifluoroacetate with arylbromides or aryl triflates to construct C(sp2)–CF2 bonds is described. The reaction was conducted under mild reaction conditions, and no preparation of organozinc reagents is required. This is the first report encompassing the conversion of aryl triflates into products containing C–CF2 bonds. In addition,
Synthesis of <sup>18</sup>F-difluoromethylarenes using aryl boronic acids, ethyl bromofluoroacetate and [<sup>18</sup>F]fluoride
作者:Jeroen B. I. Sap、Thomas C. Wilson、Choon Wee Kee、Natan J. W. Straathof、Christopher W. am Ende、Paramita Mukherjee、Lei Zhang、Christophe Genicot、Véronique Gouverneur
DOI:10.1039/c8sc05096a
日期:——
Herein, we report the radiosynthesis of 18F-difluoromethylarenes via the assembly of three components, a boron reagent, ethyl bromofluoroacetate, and cyclotron-produced non-carrier added [18F]fluoride. The two key steps are a copper-catalysed cross-coupling reaction, and a Mn-mediated 18F-fluorodecarboxylation.