Zinc-Mediated Decarboxylative Alkylation of Gem-difluoroalkenes DOI

Liting Yu,

Mei‐Lin Tang, Chang‐Mei Si

et al.

Organic Letters, Journal Year: 2018, Volume and Issue: 20(15), P. 4579 - 4583

Published: July 19, 2018

An efficient and mild zinc-mediated decarboxylative alkylation of gem-difluoroalkenes with N-hydroxyphthalimide (NHP) esters, to give monofluoroalkenes in moderate excellent yields high Z-selectivity is reported. The reaction tolerates a broad range functional groups can be easily scaled up, which thus may pave the way for its further applications medicinal chemistry materials science.

Language: Английский

Copper-Catalyzed Asymmetric Defluoroborylation of 1-(Trifluoromethyl)Alkenes DOI Creative Commons
Pan Gao,

Chengkai Yuan,

Yue Zhao

et al.

Chem, Journal Year: 2018, Volume and Issue: 4(9), P. 2201 - 2211

Published: July 26, 2018

Language: Английский

Citations

152

Plausible Rh(V) Intermediates in Catalytic C–H Activation Reactions DOI

Suhelen Vásquez‐Céspedes,

Xiaoming Wang, Frank Glorius

et al.

ACS Catalysis, Journal Year: 2017, Volume and Issue: 8(1), P. 242 - 257

Published: Nov. 20, 2017

Catalysis by defined transition-metal complexes has captivated the attention of scientific community over last decades. The well-documented utility Rh(III) in C–H activation reactions have enabled development a plethora new catalytic methods. High-valent species were first predicted palladium-based transformations. From those early studies, it was apparent that differences reactivity and selectivity could be expected. By analogy, higher valent Rh(V) represent approach offer different opportunities to improve broaden current state-of-the-art field.

Language: Английский

Citations

147

Nickel-Catalyzed Enantioselective Reductive Aryl Fluoroalkenylation of Alkenes DOI
Teng Ma,

Yate Chen,

Yuxiu Li

et al.

ACS Catalysis, Journal Year: 2019, Volume and Issue: 9(10), P. 9127 - 9133

Published: Sept. 4, 2019

Enantioselective Ni-catalyzed reductive aryl monofluoroalkenylation of alkenes between bromides and gem-difluoroalkenes has been developed. The reaction proceeding under room temperature base-free conditions tolerates a wide range functional groups on both coupling partners. Various synthetically useful oxindoles containing monofluoroalkenyl substituent are obtained in good yields with 85%–95% enantiomeric excess. In addition, the synthetic method can be further applied to late-stage complex biologically active compounds.

Language: Английский

Citations

138

Synthesis of Monofluoroalkenes: A Leap Forward DOI
Jean‐François Paquin, Myriam Drouin, Jean‐Denys Hamel

et al.

Synthesis, Journal Year: 2018, Volume and Issue: 50(05), P. 881 - 955

Published: Jan. 11, 2018

Monofluoroalkenes have found wide application in organic chemistry, medicinal and materials science. This review summarizes the most recent advances made regarding preparation of monofluoroalkenes, covering period between October 2010 September 2017. is divided three main parts, one for each possible substitution pattern, namely di-, tri-, tetrasubstituted. Then, class, further subclassification according to reaction type. 1 Introduction 2 Disubstituted 2.1 α-Monofluoroalkenes 2.2 β-Monofluoroalkenes 3 Trisubstituted 4 Tetrasubstituted 5 Conclusions

Language: Английский

Citations

134

Recent advances in three-component difunctionalization ofgem-difluoroalkenes DOI
Chi Liu, Hao Zeng, Chuanle Zhu

et al.

Chemical Communications, Journal Year: 2020, Volume and Issue: 56(72), P. 10442 - 10452

Published: Jan. 1, 2020

Three-component difunctionalization ofgem-difluoroalkenesviathe generation and transformation of a α-fluoroalkylated carbanion, carbon–metal species, radical, carbocation intermediate.

Language: Английский

Citations

134

Recent Advances in Transition Metal‐Catalyzed Functionalization of gem‐Difluoroalkenes DOI
Suvajit Koley, Ryan A. Altman

Israel Journal of Chemistry, Journal Year: 2020, Volume and Issue: 60(3-4), P. 313 - 339

Published: March 1, 2020

gem-Difluorinated alkenes are readily accessible building blocks that can undergo functionalization to provide a broad spectrum of fluorinated and non-fluorinated products. Herein, we review recent (since 2017) transition metal-catalyzed transformations these specialized summarize general reactivity patterns reactions. Many reactions net C-F bond deliver monofluorinated These typically proceed through β-fluoro alkylmetal intermediates eliminate β-fluoride monofluoroalkene A second series exploit coinage metal fluorides add F- the gem-difluorinated alkene, further delivers trifluoromethyl-containing In stark contrast, few in "fluorine-retentive processes" difluoromethylene-based

Language: Английский

Citations

133

Copper‐Catalyzed Stereoselective Defluorinative Borylation and Silylation of gem‐Difluoroalkenes DOI

Dong‐Hang Tan,

E. Lin, Weiwei Ji

et al.

Advanced Synthesis & Catalysis, Journal Year: 2017, Volume and Issue: 360(5), P. 1032 - 1037

Published: Dec. 27, 2017

Abstract The copper‐catalyzed stereoselective defluorinative borylation and silylation of gem ‐difluoroalkenes was developed. protocol led to the exclusive formation Z type monofluoroalkenyl borons silanes in generally good efficiency with broad substrate scope. products formed could be readily transformed other F‐containing molecules by taking advantage versatile reactivities C−B C−Si bonds. Experimental theoretical mechanistic studies were conducted which support an olefin insertion/ syn ‐planar β‐F elimination pathway. magnified image

Language: Английский

Citations

124

Access to benzo-fused nine-membered heterocyclic alkenes with a trifluoromethyl carbinol moiety via a double decarboxylative formal ring-expansion process under palladium catalysis DOI Creative Commons

Pulakesh Das,

Satoshi Gondo,

Nagender Punna

et al.

Chemical Science, Journal Year: 2018, Volume and Issue: 9(13), P. 3276 - 3281

Published: Jan. 1, 2018

Direct access to benzo-fused nine-membered heterocyclic alkenes with a trifluoromethyl carbinol moiety was achieved via palladium-catalysis.

Language: Английский

Citations

119

Highly tunable multi-borylation of gem-difluoroalkenes via copper catalysis DOI
Jiefeng Hu, Yue Zhao, Zhuangzhi Shi

et al.

Nature Catalysis, Journal Year: 2018, Volume and Issue: 1(11), P. 860 - 869

Published: Oct. 26, 2018

Language: Английский

Citations

113

Mild Cobalt(III)‐Catalyzed Allylative C−F/C−H Functionalizations at Room Temperature DOI Open Access
Daniel Zell, Valentin Müller, Uttam Dhawa

et al.

Chemistry - A European Journal, Journal Year: 2017, Volume and Issue: 23(50), P. 12145 - 12148

Published: July 4, 2017

Sustainable, cobalt-catalyst enabled, synthetically significant C-F/C-H functionalizations were achieved with an ample substrate scope at ambient temperature of 25 °C, thereby delivering perfluoroallylated heteroarenes. Detailed experimental and computational mechanistic studies on the provided strong support for a facile C-F cleavage.

Language: Английский

Citations

104