Results 1 to 10 of about 19,002,772 (320)

A Transient Directing Group Strategy Enables Enantioselective Multicomponent Organofluorine Synthesis. [PDF]

open access: yesJ Am Chem Soc, 2021
The vicinal fluorofunctionalization of alkenes represents an expedient strategy for converting feedstock olefins into valuable fluorinated molecules and as such has garnered significant attention from the synthetic community; however, current methods ...
Liu Z   +6 more
europepmc   +3 more sources

Directing-group-free catalytic dicarbofunctionalization of unactivated alkenes. [PDF]

open access: yesNat Chem, 2022
In the absence of directing auxiliaries, the catalytic addition of carbogenic groups to unactivated alkenes with control of regioselectivity remains an ongoing challenge in organic chemistry.
Wang H   +4 more
europepmc   +2 more sources

Progress in Catalytic Asymmetric Reactions with 7-Azaindoline as the Directing Group [PDF]

open access: yesMolecules, 2023
α-Substituted-7-azaindoline amides and α,β-unsaturated 7-azaindoline amides have emerged as new versatile synthons for various metal-catalyzed and organic-catalyzed asymmetric reactions, which have attracted much attention from chemists.
Yan-Ping Zhang   +5 more
doaj   +2 more sources

PdII -Catalyzed C(alkenyl)-H Activation Facilitated by a Transient Directing Group. [PDF]

open access: yesAngew Chem Int Ed Engl, 2022
Palladium(II)‐catalyzed C(alkenyl)−H alkenylation enabled by a transient directing group (TDG) strategy is described. The dual catalytic process takes advantage of reversible condensation between an alkenyl aldehyde substrate and an amino acid TDG to ...
Liu M   +6 more
europepmc   +2 more sources

A "Traceless" Directing Group Enables Catalytic SN2 Glycosylation toward 1,2-cis-Glycopyranosides. [PDF]

open access: yesJ Am Chem Soc, 2021
Generally applicable and stereoselective formation of 1,2-cis-glycopyranosidic linkage remains a long sought after yet unmet goal in carbohydrate chemistry. This work advances a strategy to this challenge via stereoinversion at the anomeric position of 1,
Ma X   +5 more
europepmc   +2 more sources

Palladium-catalyzed direct asymmetric C-H bond functionalization enabled by the directing group strategy. [PDF]

open access: yesChem Sci, 2020
In the past decade, selective C–C and C-heteroatom bond construction through palladium-catalyzed direct C–H bond functionalization has been extensively studied by employing a variety of directing groups.
Yang K, Song M, Liu H, Ge H.
europepmc   +2 more sources

Transient Directing Group Enabled Pd-catalyzed γ-C(sp3)-H Oxygenation of Alkyl Amines. [PDF]

open access: yesACS Catal, 2020
We report a general protocol for γ-C(sp3)–H acyloxylation and alkoxylation of free amines using 2-hydroxynicotinaldehyde as the transient directing group.
Chen YQ, Wu Y, Wang Z, Qiao JX, Yu JQ.
europepmc   +2 more sources

Palladium-catalyzed asymmetric migratory diarylation of unactivated directing-group-free internal alkenes [PDF]

open access: yesNature Communications
Enantioselective dicarbofunctionalization of alkenes is a powerful strategy for constructing functionalized sp³-rich molecules, yet it remains challenging for unactivated substrates lacking directing groups.
Linlin Fan   +6 more
doaj   +2 more sources

Ni-catalyzed regio- and stereo-defined intermolecular cross-electrophile dialkylation of alkynes without directing group [PDF]

open access: yesNature Communications, 2021
The synthesis of regio- and stereo-defined alkenes with multiple alkyl substituents is an unmet challenge. Here, the authors report a nickel-catalyzed intermolecular cross-dialkylation of alkynes devoid of directing or activating groups to afford ...
Yi-Zhou Zhan, Nan Xiao, Wei Shu
doaj   +2 more sources

PdII -Catalyzed Enantioselective C(sp3 )-H Arylation of Cyclobutyl Ketones Using a Chiral Transient Directing Group. [PDF]

open access: yesAngew Chem Int Ed Engl, 2020
The utilization of chiral transient directing groups (TDGs) has recently emerged as a promising approach for developing Pd(II)-catalyzed enantioselective C(sp3)−H activation reactions.
Xiao LJ   +6 more
europepmc   +2 more sources

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