Monofluoromethyl‐Substituted Sulfonium Ylides: Electrophilic Monofluoromethylating Reagents with Broad Substrate Scopes
作者:Yafei Liu、Long Lu、Qilong Shen
DOI:10.1002/anie.201704175
日期:2017.8.7
Two electrophilic monofluoromethylating reagents, monofluoromethyl(phenyl)sulfonium bis(carbomethoxy)methylide (3 a) and monofluoromethyl(4‐nitrophenyl)sulfonium bis(carbomethoxy)methylide (3 b), and their reactions under mild conditions with a variety of nucleophiles, such as alcohols and malonate derivatives, sulfonic and carboxylic acids, phenols, amides, and N heteroarenes, are described. Mechanistic
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.
<scp>Monofluoromethyl‐Substituted</scp>
Sulfonium Ylides: Preparation,
<scp>Structure‐Reactivity</scp>
Study and Substrate Scope
<sup>†</sup>
作者:Xin Hong、Yafei Liu、Long Lu、Qilong Shen
DOI:10.1002/cjoc.202000206
日期:2020.11
Structure‐reactivity study of a family of electrophilic monofluoromethylating reagents based on sulfonium ylide skeleton with different steric hindrance and electron‐withdrawing properties was described. These studies led us to discover two highly reactive reagents 3 with a cyclic malonate backbone and 6 with an electron‐poor 1,1,1,5,5,5‐hexafluoropentane‐2,4‐dione backbone. The high reactivity of reagent
Compounds of Formula I are useful as antagonists of TRPM8. Such compounds are useful in treating a number of TRPM8 mediated disorders and conditions and may be used to prepare medicaments and pharmaceutical compositions useful for treating such disorders and conditions. Examples of such disorders include, but are not limited to, migraines and neuropathic pain. Compounds of Formula I have the following structure:
where the definitions of the variables are provided herein.
C−H Fluoromethoxylation of Arenes by Photoredox Catalysis
作者:Giulia Bertoli、Ángel Manu Martínez、Jonas F. Goebel、Debora Belmonte、Nardana Sivendran、Lukas J. Gooßen
DOI:10.1002/anie.202215920
日期:2023.1.26
A new class of [N−OCH2F] redox-active reagents were synthetized via electrodecarboxylative C(sp3)−O coupling of N-hydroxybenzotriazoles with fluoroacetic acid and subsequent alkylation. By irradiation with blue LEDs in the presence of a photosensitizer, these bench stable reagents allow the synthesis of monofluoromethyl aryl ethers via functionalization of C−H bonds.