Wiley Online Library : Advanced Synthesis & Catalysis
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Selective Hydrosilylation and Hydroboration of Allenes Catalyzed by Cobalt‐Pincer Complexes

Abstract. Achieving precise control over regioselectivity and stereoselectivity in the hydroelementation of terminal allenes presents a formidable challenge. Despite the existence of various catalytic methods for their functionalization, this entire class of reactions remains significantly underdeveloped and demands extensive research. Here, we report...

Wed Apr 24, 2024 12:45
Synthesis of N,N‐Disubstituted Hydrazines by Electrocatalytic Addition of Hydrazines to α,β‐Unsaturated Carbonyl Compounds

A strategy for the synthesis of N,N-disubstituted hydrazines via the electrocatalytic addition of hydrazine to α,β-unsaturated carbonyl compounds is reported. The reaction was carried out under constant current electrolytic conditions in an undivided cell. Using this methodology, various N,N-disubstituted hydrazines are prepared with 57-94% yields in...

Wed Apr 24, 2024 12:45
Multicomponent Heteroarylphosphorothiolation of Alkenes for Accessing β‐Phosphorothiolated Quinoxalinones

Herein, we present a (NH4)2S2O8 mediated difunctionalization reaction of aryl alkenes with quinoxalinones and P(O)SH compounds. This method enables the synthesis of various phosphorothioate-containing quinoxalin-2(1H)-one derivatives (46 examples) in 37-79% yields. The reaction is compatible with a range of functional groups and is easily adaptable...

Wed Apr 24, 2024 12:45
Phospholanes via twofold C‐H‐addition to phospholes

Abstract. A synthetic route towards phospholanes via twofold C-H-addition of a DMSO molecule to β-H substituted phospholes is described. The resulting fused phospholane oxothiolane system in case of symmetric α-substitution possesses four stereogenic centers or rather six in case of asymmetric α-substitution. The reaction conditions are shown to be...

Wed Apr 24, 2024 12:45
Tetrafluoroethylation of Electron‐Rich Alkenyl Iodides Enabled by <i>in situ</i> Generation of Solvent‐Stabilized “Ligandless” CuCF2CF2H

In this study, we have developed a metal-mediated synthetic method for incorporating the 1,1,2,2-tetrafluoroethyl (CF2CF2H) motif into unactivated, electron-rich alkenyl iodides using cross-coupling reactions. We discovered that the stable Cu(CF2CF2H)(PPh2Me)3 complex, while unreactive with these substrates, serves as a valuable P-ligated reservoir...

Wed Apr 24, 2024 12:45
Asymmetric Boracarboxylation of Styrenes Using Carbon Dioxide

The boracarboxylation reaction has potential for production of natural products and drug candidates, but the development of an asymmetric version of this transformation is challenging. We report an enantioselective boracarboxylation of styrenes, enabled by a copper catalyst containing chiral phosphines. Our experimental conditions provide yields between...

Tue Apr 23, 2024 13:58

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