Acid-promoted direct electrophilic trifluoromethylthiolation of phenols
作者:Marjan Jereb、Kaja Gosak
DOI:10.1039/c4ob02633k
日期:——
various substituted phenols was accomplished using PhNHSCF3 (N-trifluoromethylsulfanyl)aniline, (1) in the presence of BF3·Et2O (2) or triflic acid as the promoter. The functionalization was exclusively para-selective; phenols unsubstituted in both the ortho- and para positions solely gave the para-substituted SCF3-products in all cases, while para-substituted phenols gave the ortho-substituted SCF3-products
Metal-Free Direct Trifluoromethylthiolation of Aromatic Compounds Using Triptycenyl Sulfide Catalyst
作者:Ryo Kurose、Yuji Nishii、Masahiro Miura
DOI:10.1021/acs.orglett.1c00727
日期:2021.3.19
efficient synthetic method for the electrophilic trifluoromethylthiolation of aromaticcompounds. The key is to use triptycenyl sulfide (Trip-SMe) and TfOH to enhance the electrophilicity of SCF3 fragment through the formation of sulfonium intermediates. This method enables direct installation of an SCF3 group onto unactivated aromatics at room temperature, adopting a commercially available saccharin-based
report the design and synthesis of hypervalent trifluoromethylthio-iodine(III) reagent 1 and the elucidation of its structure by NMR spectroscopy and X-ray crystallography. The trifluoromethylthiolation reactions of 1 with various nucleophiles were explored, and this compound was found to be a versatile electrophilicreagent for the transfer of a trifluoromethylthio group (-SCF3). The hydrogen-bonding