Radical Aromatic Trifluoromethylthiolation: Photoredox Catalysis vs. Base Mediation

被引:30
作者
Koziakov, Denis [1 ]
Majek, Michal [1 ]
Jacobi von Wangelin, Axel [1 ,2 ]
机构
[1] Univ Regensburg, Inst Organ Chem, Regensburg, Germany
[2] Univ Hamburg, Dept Chem, Martin Luther King Pl 6, D-20146 Hamburg, Germany
关键词
Aromatic substitution; Photoredox catalysis; Radical reactions; Fluorinations; Thiols; Fluorine; ARYL FLUOROALKYL SULFIDES; OXIDATIVE TRIFLUOROMETHYLTHIOLATION; NUCLEOPHILIC TRIFLUOROMETHYLATION; SELECTIVE FLUORINATION; CONVENIENT SYNTHESIS; LIQUID-CRYSTALS; DRUG DESIGN; CHEMISTRY; PERFLUOROALKYLATION; HALOGENOPERFLUOROALKANES;
D O I
10.1002/ejoc.201701339
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Trifluoromethyl aryl sulfides (Ar-SCF3) constitute highly attractive building blocks due to their exceptional lipophilicity and chemical properties. Related protocols of radical aromatic trifluoro-methylthiolation of arenediazonium salts were developed that are based on the facile generation of intermediate aryl radicals. Their reactions with commercial F3CS-SCF3 under very mild conditions afforded a diverse set of Ar-SCF3 (< 90% yield). Direct comparison of photoredox catalysis {eosin Y or [Ru(bpy)(3)]Cl-2} with the weak base-mediated dark reaction documented higher synthetic efficiency of the former but higher operational simplicity of the latter strategy.
引用
收藏
页码:6722 / 6725
页数:4
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