Fe-catalyzed hydroxytrifluoromethylation of α-(trifluoromethyl)styrenes with CF<sub>3</sub>SO<sub>2</sub>Na: facile access to α,β-bistrifluoromethyl tertiary alcohols
作者:Pai Zheng、Chuan Liu、Qianding Zeng、Yi Zhang、Ying Liu、Jingjing He、Yupian Deng、Song Cao
DOI:10.1039/d2ob02035a
日期:——
A mild and practical Fe-catalyzed hydroxytrifluoromethylation of α-(trifluoromethyl)styrenes with CF3SO2Na in the presence of K2S2O8 and air was developed. The reaction proceeded efficiently at room temperature without β-fluoride elimination and afforded the corresponding α,β-bistrifluoromethyl tertiary alcohols in good to excellent yields.
在 K 2 S 2 O 8和空气存在下,开发了一种温和且实用的 Fe 催化的 α-(三氟甲基) 苯乙烯与 CF 3 SO 2 Na 的羟基三氟甲基化反应。该反应在室温下有效进行,没有 β-氟化物消除,并以良好至优异的产率提供相应的 α,β-双三氟甲基叔醇。
Controllable Synthesis of Trifluoromethyl- or gem-Difluorovinyl-containing Analogues of Neonicotinoids by the Reaction of α-(Trifluoromethyl)styrenes with 2-Nitroimino-imidazolidine
作者:Jingjing He、Zhudi Sun、Yupian Deng、Ying Liu、Pai Zheng、Song Cao
DOI:10.3390/molecules28083530
日期:——
temperature within 0.5–6 h, affording structurally diverse β-trifluoromethyl-β-arylethyl analogues of neonicotinoids in moderate to good yields. The γ,γ-difluoro-β-arylallyl analogues of neonicotinoids were also successfully synthesized via defluorination of α-(trifluoromethyl)styrenes, with 2a and 2c using NaH as base at an elevated temperature together with a prolonged reaction time of 12 h. The method
DBN-Mediated Addition Reaction of α-(Trifluoromethyl)styrenes with Diazoles, Triazoles, Tetrazoles, and Primary, Secondary, and Secondary Cyclic Amines
作者:Jingjing He、Chuan Liu、Yupian Deng、Qianding Zeng、Yi Zhang、Ying Liu、Pai Zheng、Song Cao
DOI:10.1021/acs.orglett.2c00410
日期:2022.4.1
A mild and efficient DBN-mediated addition reaction of α-(trifluoromethyl)styrenes with diazoles, triazoles, tetrazoles, and primary, secondary, and secondary cyclic amines was developed. This practical protocol provided a robust method for the synthesis of various β-trifluoromethyl nitrogen-containing heterocycles and β-trifluoromethyl amines.
Highly Regioselective Synthesis of <i>N</i>‐β‐trifluoromethyl 2‐pyridones via <i>anti</i>‐Markovnikov Hydroamination of α‐(trifluoromethyl)styrenes with 2‐pyridones
作者:Yi Zhang、Zhudi Sun、Jingjing He、Yupian Deng、Ying Liu、Pai Zheng、Song Cao
DOI:10.1002/asia.202300144
日期:2023.5.16
A novel and facile method for the synthesis of N-β-CF3-substituted 2-pyridones via hydroamination of α-(trifluoromethyl)styrenes with 2-pyridones was described. The reaction proceeded smoothly at room temperature, affording a variety of N-(β-trifluoromethyl-β-arylethyl)pyridin-2(1H)-ones in moderate to good yields with excellent N-regioselectivity.
描述了一种通过 α-(三氟甲基)苯乙烯与 2-吡啶酮的加氢胺化反应合成N -β-CF 3 -取代的 2-吡啶酮的新方法。反应在室温下顺利进行,以中等至良好的收率和优异的N-区域选择性提供多种N -(β-三氟甲基-β-芳基乙基)吡啶-2(1 H )-酮。
NiH‐Catalyzed Migratory Defluorinative Olefin Cross‐Coupling: Trifluoromethyl‐Substituted Alkenes as Acceptor Olefins to Form
<i>gem</i>
‐Difluoroalkenes
a NiH-catalyzed migratory defluorinative coupling between two electronically differentiated olefins. A broad range of unactivated donor olefins can be joined directly to acceptor olefins containing an electron-deficient trifluoromethyl substituent in both intra- and intermolecular fashion to form gem-difluoroalkenes. This migratory coupling shows both site- and chemoselectivity under mild conditions