在室温下,分别实现了CF 3 SO 2 Cl和CHF 2 SO 2 Cl的三苯基膦介导的无金属三氟甲基硫醇化和二氟甲基硫醇化,分别合成了三氟甲基二硫化物和二氟甲基二硫化物。由碘化物原位产生的碘通过形成碘代三苯基碘化碘促进了该反应,该碘三苯基phosph可在该转化中用作还原剂。易于获得的试剂和无过渡金属的温和反应条件使该方案比传统方法更实用。
<i>N</i>-Trifluoromethylthiosaccharin: An Easily Accessible, Shelf-Stable, Broadly Applicable Trifluoromethylthiolating Reagent
作者:Chunfa Xu、Bingqing Ma、Qilong Shen
DOI:10.1002/anie.201403983
日期:2014.8.25
A new, electrophilic trifluoromethylthiolating reagent, N‐trifluoromethylthiosaccharin, was developed and can be synthesized in two steps from saccharin within 30 minutes. N‐trifluoromethylthiosaccharin is a powerful trifluoromethylthiolating reagent and allows the trifluoromethylthiolation of a variety of nucleophiles such as alcohols, amines, thiols, electron‐rich arenes, aldehydes, ketones, acyclic
Direct Phosphorus-Induced Fluoroalkylthiolation with Fluoroalkylsulfonyl Chlorides
作者:Lvqi Jiang、Wenbin Yi、Qiran Liu
DOI:10.1002/adsc.201600651
日期:2016.12.7
A simple and practical method of fluoroalkylthiolation using fluoroalkylsulfonyl chlorides (RfSO2Cl, Rf=CF3, C4F9, C8F17, CF2H and CH2CF3) has been developed. These easy‐to‐handlereagents are powerful and can be used for electrophilic fluoroalkylthiolation of electron‐rich arenes and thiols using diethyl phosphite as reducing agent.
已经开发了使用氟代烷基磺酰氯(R f SO 2 Cl,R f= CF 3,C 4 F 9,C 8 F 17,CF 2 H和CH 2 CF 3)的氟烷基硫醇化的简单实用方法。这些易于处理的试剂功能强大,可使用亚磷酸二乙酯作为还原剂,用于富电子芳烃和硫醇的亲电氟烷基硫醇化反应。
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
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.