Direct α-C-H Trifluoromethylselenolation of Carbonyl Compounds
作者:Clément Ghiazza、Anis Tlili、Thierry Billard
DOI:10.1002/ejoc.201800237
日期:2018.8.1
Trifluoromethylselenolated compounds represent an emerging family of products with specific properties. Herein, easy access to α‐trifluoromethylselenyl carbonylcompounds under mild conditions is described, without pre‐functionalization. The method has been extended to elaborated molecules also with good yields. Furthermore, this strategy can be easily extrapolated to other fluoroalkylseleno moieties
Trifluoromethylseleno substituent (CF3Se) is an emerging group, but its direct introduction onto organic molecules is still quite limited and mainly restricted to nucleophilic methods. Herein, we describe a new approach to easily and safely perform electrophilic trifluoromethylselenolation starting from a simple and easily accessible reagent, namely, benzyltrifluoromethyl selenide. This strategy can
A Metal-Free Route to Heterocyclic Trifluoromethyl- and Fluoroalkylselenolated Molecules
作者:Quentin Glenadel、Ermal Ismalaj、Thierry Billard
DOI:10.1021/acs.orglett.7b03338
日期:2018.1.5
A metal-free methodology to easily synthesize various CF3Se-containing heterocyclic compounds has been developed through intramolecular ring closures of alkynes promoted with CF3SeCl. Moreover, this strategy has also been extended to other fluoroalkylselenyl groups.
Herein the copper‐catalyzeddirect perfluoroalkylselenolation of aryl‐ and vinylboronic acids is described for the first time. The key to success is the design of new shelf‐stable perfluoroalkylselenolating reagents, namely perfluoroalkyl tolueneselenosulfonates. The reaction occurs at roomtemperature in the presence of commercially available catalyst and ligand in catalytic quantities.
Electrophilic Trifluoromethyl- and Fluoroalkylselenolation of Organometallic Reagents
作者:Quentin Glenadel、Ermal Ismalaj、Thierry Billard
DOI:10.1002/ejoc.201601526
日期:2017.1.18
Fluoroalkylseleno groups are emerging groups that still suffer from a lack of efficient methods for introduction onto organic molecules. Herein, we describe an efficient method to perform reactions between in situ formed fluoroalkaneselenyl chlorides and organometallic reagents. With this strategy, various fluoroalkylselenolated molecules were easily obtained. Furthermore, the Hansch parameter of the