Trifluoromethylthiolation and Trifluoromethylselenolation of α-Diazo Esters Catalyzed by Copper
作者:Christian Matheis、Thilo Krause、Valentina Bragoni、Lukas J. Goossen
DOI:10.1002/chem.201602730
日期:2016.8.22
α‐Diazo esters are smoothly converted into the corresponding trifluoromethyl thio‐ or selenoethers by reaction with Me4NSCF3 or Me4NSeCF3, respectively, in the presence of catalytic amounts of copper thiocyanate. This straightforward method gives high yields under neutral conditions at room temperature and is applicable to a wide range of functionalized molecules, including diverse α‐amino acid derivatives
A Convenient Method for the Transformation of Alcohols into Alkyl Trifluoromethyl Sulfides
作者:A. A. Kolomeitsev、K. Yu. Chabanenko、G. -V. Röschenthaler、Yu. L. Yagupolskii
DOI:10.1055/s-1994-25422
日期:——
Alkyl trifluoromethyl sulfides are prepared by phosphitylation of alcohols or α-hydroxy esters using bis(diethylamido)chlorophosphite followed by the reaction with bis(trifluoromethyl) disulfide under extremely mild conditions in near by quantitative yields.
Direct perfluoroalkylation of aliphatic thiols was performed in the presence of sodium hydroxymethanesulfinate (Rongalite). Reaction of mercaptoalkanoic esters with trifluoromethyl bromide gave the corresponding trifluoromethylthio ethers. Condensation of alkane dithiols with perfluoroalkyl iodides led mainly to fluorinated dithioethers. These alkylation reactions are interpreted as occurring via in