Results 31 to 40 of about 748,226 (258)

Palladium-Catalyzed Heck Coupling Reaction of Aryl Bromides in Aqueous Media Using Tetrahydropyrimidinium Salts as Carbene Ligands

open access: yesMolecules, 2010
An efficient and stereoselective catalytic system for the Heck cross coupling reaction using novel 1,3-dialkyl-3,4,5,6-tetrahydropyrimidinium salts (1, LHX) and Pd(OAc)2 loading has been reported.
İsmail Özdemir   +4 more
doaj   +1 more source

On the Use of Iron in Organic Chemistry

open access: yesMolecules, 2020
Transition metal catalysis in modern organic synthesis has largely focused on noble transition metals like palladium, platinum and ruthenium. The toxicity and low abundance of these metals, however, has led to a rising focus on the development of the ...
Arnar Guðmundsson, Jan-E. Bäckvall
doaj   +1 more source

Ni-Catalyzed Electrochemical C(sp2)−C(sp3) Cross-Coupling Reactions

open access: yes, 2020
Nickel (Ni) catalyzed carbon-carbon (C−C) cross-coupling has been considerably developed in last decades and has demonstrated unique reactivities compared to palladium.
maowei, hu   +4 more
core   +1 more source

Synthesis of 2H-pyrroles via iron catalyzed dehydrogenative coupling and C–C bond cleavage

open access: yesGreen Synthesis and Catalysis, 2021
Iron catalyzed coupling of β-amino alcohols with allylic alcohols for the synthesis of 3,4-dihydro-2H-pyrrole derivatives has been developed. Mechanistic studies suggest that the reaction involves iron catalyzed dehydrogenative coupling and C–C bond ...
Suya Cui   +7 more
doaj   +1 more source

Visible light-driven C−H activation and C–C coupling of methanol into ethylene glycol

open access: yesNature Communications, 2018
Direct transformation of methanol into two- or multi-carbon compounds is extremely attractive but remains a challenge. Here, the authors report an efficient photocatalytic route to the transformation of methanol into ethylene glycol and hydrogen over a ...
Shunji Xie   +10 more
doaj   +1 more source

Palladium-Catalysed Intramolecular C–N versus C–C Coupling: The Effect of 1,8-peri-Interaction in the Naphthalene System

open access: yesSynOpen, 2019
Palladium-catalysed competitive intramolecular C–N and C–C coupling of 2-amino-2′-bromodiarylsulfones has been carried out based on 1,8-peri-interactions for the synthesis of phenothiazinedioxide and benzonaphthathiophenedioxide derivatives.
Sudarshan Debnath, Shovan Mondal
doaj   +1 more source

H2-Mediated Copper Catalyzed C–C Coupling Reactions – Selective Formation of Skipped Dienes

open access: yes, 2023
A simple copper(I)/N-heterocyclic carbene complex facilitates a H2-mediated C–C coupling reaction of internal alkynes and allylic chlorides. The catalytic protocol delivers the corresponding 1,4-dienes (skipped dienes) with high chemo-, regio- and ...
Lea, Brechmann, Teichert, Johannes
core   +1 more source

Rhodium(III)-Catalyzed C-C Coupling between Arenes and Aziridines by C-H Activation

open access: yes, 2013
Rhodium(III)-Catalyzed C-C Coupling between Arenes and Aziridines by C-H ...
Wan, Boshun   +6 more
core   +1 more source

Ligand-Enabled Gold-Catalyzed C(sp2)–O Cross-Coupling Reactions

open access: yes, 2023
Reported herein is a ligand-enabled gold-catalyzed C(sp2)-O cross-coupling reaction of aryl iodides and aliphatic alcohols. The synthesis of a variety of aryl alkyl ethers including complex biomolecules and various medicinally relevant motifs has been ...
Avishek, Das, Nitin T., Patil
core   +1 more source

Photocatalytic deaminative benzylation and alkylation of tetrahydroisoquinolines with N-alkylpyrydinium salts

open access: yesBeilstein Journal of Organic Chemistry, 2020
A ruthenium-catalyzed photoredox coupling of substituted N-aryltetrahydroisoquinolines (THIQs) and different bench-stable pyridinium salts was successfully developed to give fast access to 1-benzyl-THIQs.
David Schönbauer   +3 more
doaj   +1 more source

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