Direct and Chemoselective Electrophilic Monofluoromethylation of Heteroatoms (<i>O</i>-, <i>S-</i>, <i>N</i>-, <i>P</i>-, <i>Se</i>-) with Fluoroiodomethane
作者:Raffaele Senatore、Monika Malik、Markus Spreitzer、Wolfgang Holzer、Vittorio Pace
DOI:10.1021/acs.orglett.9b04654
日期:2020.2.21
The commercially available fluoroiodomethane represents a valuable and effective electrophilic source for transferring the CH2F unit to a series of heteroatom-centered nucleophiles under mild basic conditions. The excellent manipulability offered by its liquid physical state (bp 53.4 °C) enables practical and straightforward one-step nucleophilic substitutions to retain the chiral information embodied
Bunte Salt CH<sub>2</sub>FSSO<sub>3</sub>Na: An Efficient and Odorless Reagent for Monofluoromethylthiolation
作者:Fanmin Liu、Lvqi Jiang、Huangyao Qiu、Wenbin Yi
DOI:10.1021/acs.orglett.8b02753
日期:2018.10.5
A practical and efficient monofluoromethylthiolation that employs the typical Bunte salt, sodium S-(fluoromethyl) sulfurothioate, as the sulfur source is described. This reagent reacts readily with a variety of aryl amines and aryl thiols. The high tolerance of functional groups demonstrates the potential of this reaction. In addition, this method is suitable for the late-stage monofluoromethylthiolation
Efficient Docking–Migration Strategy for Selective Radical Difluoromethylation of Alkenes
作者:Jiajia Yu、Zhen Wu、Chen Zhu
DOI:10.1002/anie.201811346
日期:2018.12.21
Radical‐mediated difunctionalization of alkenes is a powerful tactic for olefin utilization. However, the transformation of unactivated alkenes still remains a formidable challenge. Now a conceptually new docking–migration strategy is presented for the difunctionalization of alkenes with photoredox catalysis. Both activated and unactivated alkenes are suitable substrates. A vast array of functional
Direct monofluoromethylation of O-, S-, N-, and P-nucleophiles with PhSO(NTs)CH<sub>2</sub>F: the accelerating effect of α-fluorine substitution
作者:Xiao Shen、Min Zhou、Chuanfa Ni、Wei Zhang、Jinbo Hu
DOI:10.1039/c3sc51831k
日期:——
An efficient and direct monofluoromethylation of O-, S-, N-, and P-nucleophiles with PhSO(NTs)CH2F 1 has been developed. In contrast to the previously known detrimental effect of α-fluorine substitution on SN2 reactions, the current monofluoromethylation is accelerated by the α-fluorine substitution. Based on a mechanistic study, a new reactivity of sulfoximine (as a radical monofluoromethylation reagent) is disclosed.
Radical Fluoroalkylation of Isocyanides with Fluorinated Sulfones by Visible-Light Photoredox Catalysis
作者:Jian Rong、Ling Deng、Ping Tan、Chuanfa Ni、Yucheng Gu、Jinbo Hu
DOI:10.1002/anie.201510533
日期:2016.2.18
visible‐light photoredox catalysis. A wide range of readily available mono‐, di‐, and trifluoromethyl heteroaryl sulfones can thus be used as efficient radical fluoroalkylation reagents under mild conditions. This method not only describes a new syntheticapplication of fluorinated sulfones, but also provides a new route to fluoroalkyl radicals.