Selective and Scalable Synthesis of Trifluoromethanesulfenamides and Fluorinated Unsymmetrical Disulfides using a Shelf-Stable Electrophilic SCF<sub>3</sub>Reagent
作者:Roman Pluta、Magnus Rueping
DOI:10.1002/chem.201405654
日期:2014.12.22
and thiols using N‐(trifluoromethylthio)phthalimide under mild, metal‐free conditions is described. A series of trifluoromethanesulfenamides and unsymmetricaldisulfides is prepared from the corresponding aliphatic and aromatic amines and thiols in good yields. The reactions are operationally simple and tolerate a wide variety of functional groups. Trifluoromethanesulfenamides and disulfides belong to
Synthetic Uses of Thio- and Selenoesters of Trifluoromethylated Acids. 1. Preparation of Trifluoromethyl Sulfides and Selenides
作者:Thierry Billard、Nicolas Roques、Bernard R. Langlois
DOI:10.1021/jo980649a
日期:1999.5.1
Trifluorothioacetates (CF3CO-S-R, from (CF3CO)(2)O and thiols) as well as trifluoromethanethio-or trifluoromethaneselenosulfonates (CF3SO2-Y-R; Y = S, Se; from CF3SO2Na, RYYR, and Br-2) can be formally decarbonylated or desulfonylated, respectively, provided that they are photolyzed at 40 degrees C in the presence of 1 equiv of the corresponding disulfide or diselenide. Trifluoromethyl sulfides or selenides are obtained, and the added disulfide (or diselenide) is recovered after reaction. In such a way, S-(trifluoromethyl)cysteine derivatives can be obtained.
Trifluoromethanesulfinyl Chloride for Electrophilic Trifluoromethythiolation and Bifunctional Chlorotrifluoromethythiolation
Trifluoromethanesulfinylchloride (CF3SOCl) has been introduced as a new reagent for C−H trifluoromethylthiolation of indoles, thiophenes, and ketones under catalyst‐free conditions and in the absence of reductant. The disproportionation of CF3SOCl to CF3SO2Cl and CF3SCl provides two pathways for the trifluoromethylthiolation. Direct trifluoromethylthiolation with CF3SCl or trifluoromethylsulfoxidation