Pd-Catalyzed Boroperfluoroalkylation of Alkynes Opens a Route to One-Pot Reductive Carboperfluoroalkylation of Alkynes with Perfluoroalkyl and Aryl Iodides
A three-component tandem Pd-catalyzed perfluoroalkylative borylation of terminal and internalalkynes is presented. On the basis of this methodology, the first reductive dicarbofunctionalization of alkynes with two electrophiles (perfluoroalkyl and aryl iodides) through a temperature-controlled sequence of iodoperfluoroalkylation–borylation coupling is developed. This regio- and stereoselective process
Regio- and Stereoselective Radical Perfluoroalkyltriflation of Alkynes Using Phenyl(perfluoroalkyl)iodonium Triflates
作者:Xi Wang、Armido Studer
DOI:10.1021/acs.orglett.7b01215
日期:2017.6.2
A method for regio- and stereoselective anti-addition of the perfluoroalkyl and the triflate group of phenyl(perfluoroalkyl)iodonium triflates to alkynes is presented. The radical reaction uses cheap CuCl as a smart initiator and can be conducted in gram scale. The perfluoroalkyltriflated products are readily further functionalized, rendering this transformation valuable.
Stereoselective Base‐Catalyzed 1,1‐Silaboration of Terminal Alkynes
作者:Yiting Gu、Yaya Duan、Yangyang Shen、Ruben Martin
DOI:10.1002/anie.201913544
日期:2020.1.27
A base-catalyzed reaction that enables stereoselective 1,1-silaboration of terminal alkynes is described. This method not only offers a new strategy to functionalize simple and readily accessible alkynes beyond 1,2-difunctionalization, but also provides an unconventional atom- and step-economical approach to rapidly and reliably access versatile geminal silylboranes in the absence of transition metals
Direct <i>trans</i>-Selective Ruthenium-Catalyzed Reduction of Alkynes in Two-Chamber Reactors and Continuous Flow
作者:Karoline T. Neumann、Sebastian Klimczyk、Mia N. Burhardt、Benny Bang-Andersen、Troels Skrydstrup、Anders T. Lindhardt
DOI:10.1021/acscatal.6b01045
日期:2016.7.1
efficient trans-selective hydrogenation of alkynes under lowhydrogenpressure and lowreaction temperatures is reported, applying a commercially available ruthenium hydride complex. The developed reaction conditions, which tolerate a variety of functional groups, are carried out in a two-chamber setup with ex situ generated hydrogen. The reaction setup is highly suitable for deuterium labeling. The trans-selective
A Broadly Applicable Method for Pd-Catalyzed Carboperfluoro-alkylation of Terminal and Internal Alkynes: A Convenient Route to Tri- and Tetrasubstituted Olefins
作者:Sylwester Domański、Wojciech Chaładaj
DOI:10.1021/acscatal.6b00777
日期:2016.6.3
A three-component Pd-catalyzed difunctionalization of internal and terminal alkynes with iodoperfluoroalkanes and boronic acids is reported here. Under low catalyst loading and mild reaction conditions, perfluoroalkylated tri- and tetrasubstitutedolefins were obtained in very good yields and in excellent regio- and stereoselectivities.