ACS Catalysis, Год журнала: 2025, Номер unknown, С. 8855 - 8864
Опубликована: Май 11, 2025
Язык: Английский
ACS Catalysis, Год журнала: 2025, Номер unknown, С. 8855 - 8864
Опубликована: Май 11, 2025
Язык: Английский
Journal of the American Chemical Society, Год журнала: 2024, Номер 146(5), С. 3405 - 3415
Опубликована: Янв. 29, 2024
Metal-hydride-catalyzed alkene hydroalkylation has been developed as an efficient method for C(sp
Язык: Английский
Процитировано
20Nature Synthesis, Год журнала: 2023, Номер 2(11), С. 1020 - 1036
Опубликована: Окт. 16, 2023
Язык: Английский
Процитировано
44Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(30)
Опубликована: Май 31, 2023
Abstract Cyclopropene hydrofunctionalization has been a promising strategy for accessing multi‐substituted cyclopropanes; however, cyclopropene hydroalkylation remains underdeveloped. Herein, we report low‐valent CoH‐catalyzed facial‐selective to access cyclopropanes. This reaction exhibits broad substrate scope of alkyl halides and cyclopropenes tolerates many functional groups. Moderate‐to‐good facial‐selectivity is obtained without any directing Mechanism studies provide evidence that radicals are generated from irreversible CoH insertion responsible the facial‐selectivity. Our preliminary exploration demonstrates asymmetric can be realized conspicuous auxiliary
Язык: Английский
Процитировано
27Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(36)
Опубликована: Июнь 19, 2023
We describe a copper catalyst that promotes the addition of phosphines to cyclopropenes at ambient temperature. A range cyclopropylphosphines bearing different steric and electronic properties can now be accessed in high yields enantioselectivities. Enrichment phosphorus stereocenters is also demonstrated via Dynamic Kinetic Asymmetric Transformation (DyKAT) process. combined experimental theoretical mechanistic study supports an elementary step featuring insertion Cu
Язык: Английский
Процитировано
25Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(40)
Опубликована: Авг. 18, 2023
Herein, a copper(I)-catalyzed asymmetric hydrophosphination of 3,3-disubstituted cyclopropenes is reported. It provides series phosphine derivatives in high to excellent diastereo- and enantioselectivities. The methodology enjoys broad substrate scope on both diarylphosphines. stereoselectivity attributed the stability Cu(I)-(R,R)-QUINOXP* complex presence stoichiometric HPPh2 produced phosphines, high-performance induction complex. Finally, method used for synthesis new chiral phosphine-olefin compounds built cyclopropane skeleton, one which serves as wonderful ligand Rh-catalyzed conjugate addition phenylboronic acid various α,β-unsaturated compounds.
Язык: Английский
Процитировано
25Journal of the American Chemical Society, Год журнала: 2024, Номер 146(28), С. 18892 - 18898
Опубликована: Июль 5, 2024
Herein, we designed a reaction for the desymmetrization-addition of cyclopropenes to imines by leveraging synergy between photoredox and asymmetric cobalt catalysis. This protocol facilitated synthesis series chiral functionalized cyclopropanes with high yield, enantioselectivity, diastereoselectivity (44 examples, up 93% yield >99% ee). A possible mechanism involving cyclopropene desymmetrization Co-H species imine addition Co-alkyl was proposed. study provides novel route important extends frontier metallaphotoredox
Язык: Английский
Процитировано
18Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Май 6, 2024
Abstract General, catalytic and enantioselective construction of chiral α,α -dialkyl indoles represents an important yet challenging objective to be developed. Herein we describe a cobalt catalyzed anti- Markovnikov alkene hydroalkylation via the remote stereocontrol for synthesis other N -heterocycles. This asymmetric C(sp 3 )−C(sp ) coupling features high flexibility in introducing diverse set alkyl groups at α -position The utility this methodology has been demonstrated by late-stage functionalization drug molecules, bioactive natural products functional materials, identification class molecules exhibiting anti-apoptosis activities UVB-irradiated HaCaT cells. Ligands play vital role controlling reaction regioselectivity. Changing ligand from bi-dentate L6 tridentate L12 enables CoH-catalyzed hydroalkylation. Mechanistic studies disclose that involves migratory insertion process while MHAT process.
Язык: Английский
Процитировано
10Journal of the American Chemical Society, Год журнала: 2023, Номер 145(27), С. 14573 - 14580
Опубликована: Июнь 30, 2023
Chiral N-cyclopropyl pyrazoles and structurally related heterocycles are prepared using an earth-abundant copper catalyst under mild reaction conditions with high regio-, diastereo-, enantiocontrol. The observed N2:N1 regioselectivity favors the more hindered nitrogen of pyrazole. Experimental DFT studies support a unique mechanism that features five-centered aminocupration.
Язык: Английский
Процитировано
22Journal of the American Chemical Society, Год журнала: 2023, Номер 145(40), С. 22122 - 22134
Опубликована: Сен. 25, 2023
A nickel hydride-catalyzed regio- and enantioselective hydroalkylation reaction was developed to give access a library of chiral β- or γ-branched aromatic N-heterocycles. This intriguing asymmetric transformation features excellent selectivities, step- atom-economies, generating two kinds products through one synthetic strategy. Furthermore, the possible mechanism extensively investigated using numerous control experiments density functional theory calculations.
Язык: Английский
Процитировано
22Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(20)
Опубликована: Март 13, 2023
A method for the asymmetric construction of functionalized acyclic all-carbon quaternary stereocenters and 1,3-nonadjacent stereoelements has been developed via organo/metal dual catalyzed allenylic substitution branched linear aldehydes, by developing an unknown secondary-secondary diamine as enabling organocatalyst. Although it is believed that diamines are difficult to be used organocatalysts in catalysis, this study demonstrates such can successfully combined with a metal catalyst catalysis. Our enables two important classes motifs which were previously access, axially chiral allene-containing bearing allenyl axial chirality central chirality, good yields high enantio- diastereoselectivity.
Язык: Английский
Процитировано
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