Results 41 to 50 of about 8,786 (262)

NHC-catalysed highly selective aerobic oxidation of nonactivated aldehydes

Beilstein Journal of Organic Chemistry, 2013
This publication describes a highly selective oxidation of aldehydes to the corresponding acids or esters. The reaction proceeds under metal-free conditions by using N-heterocyclic carbenes as organocatalysts in combination with environmentally friendly ...
Lennart Möhlmann, Stefan Ludwig, Siegfried Blechert   +2 more
doaj   +1 more source

Synthesis of C2-Symmetric Benzimidazolium Salts and Their Application in Palladium-Catalyzed Enantioselective Intramolecular α-Arylation of Amides

Molecules, 2016
A series of C2-symmetric chiral benzimidazolium salts, the precursor of N-heterocyclic carbene ligands, were designed and synthesized from 1,2-dibromobenzene.
Weiping He, Wei Zhao, Bihui Zhou, Haifeng Liu, Xiangrong Li, Linlin Li, Jie Li, Jianyou Shi   +7 more
doaj   +1 more source

Photochromic diarylethene-containing ionic liquids and N-heterocyclic carbenes [PDF]

, 2009
The design and synthesis of a series of photochromic diarylethene- containing Arduengo-type N-heterocyclic carbenes (NHCs) of gold(I), silver(I) and palladium(II) and their imidazolium salt precursors are reported.
Zhu, N, Ko, CC, Lee, JKW, Yam, VWW
core   +1 more source

Catalisadores contendo carbenos n-heterocíclicos como ligantes: propriedades, sínteses, aplicações e comparação com outros ligantes Catalysts containing n-heterocyclic carbenes as ligands: properties, syntheses, applications and comparison with other catalysts

Química Nova, 2008
N-heterocyclic carbenes (NHCs) have become of considerable importance in modern organometallic chemistry and homogeneous catalysis. There are several advantages in the use NHCs over their phosphorus analogues, which explains the enormous development of ...
Julio Cezar Pastre, Carlos Roque Duarte Correia   +1 more
doaj   +1 more source

Corannulene meets N-heterocyclic carbenes [PDF]

, 2019
Inspired by the pioneering work of Arduengo et. al and Barth and Lawton, this thesis describes the synthetic strategies attempted and successfully utilised to synthesise novel corannulene-based imidazolium salts preceding N-heterocyclic carbenes ...
Ezzah Mohamed Muzammil
core   +1 more source

Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations

Angewandte Chemie, EarlyView.
Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera, Francesco Basoccu, Andrea Porcheddu   +2 more
wiley   +2 more sources

NHCs Catalyzed Hydrophosphonylation of α-Ketoesters and α-Trifluoromethyl Ketones

The Scientific World Journal, 2013
N-Heterocyclic carbenes catalyzed hydrophosphonylation reaction of α-ketoesters and α-trifluoromethyl ketones was developed. Under the catalysis of 10 mol% IPr, α-ketoesters or α-trifluoromethyl ketones reacted with dialkyl phosphites to provide ...
Lin He, Zhi-Hua Cai, Ji-Xin Pian, Guang-Fen Du   +3 more
doaj   +1 more source

Ultra‐Thin and Highly Insulating Aromatic Monolayers by N‐Heterocyclic Carbenes

Angewandte Chemie, EarlyView.
By using N‐heterocyclic carbenes extremally insulating and at the same time as thin as 0.3 nm molecular films are formed. The charge transport calculations indicate absence of destructive quantum interference effect which was so far the only way to suppress conductivity in aromatic molecules.
Mateusz Wróbel, Raka Ahmed, William Bro‐Jørgensen, Krzysztof Kozieł, Christian A. Nijhuis, Gemma C. Solomon, Piotr Cyganik   +6 more
wiley   +2 more sources

Breaking boundaries in ammonia production at ambient conditions: Exploring pristine carbon allotropes as catalyst

Sustainable Chemistry for the Environment
The synthesis of ammonia from molecular nitrogen and hydrogen under ambient conditions remains one of the greatest challenges in chemical method development. Notable successes have been achieved using transition metal complexes.
Amrita Pathak, Saswati Garai, Arpit Dutta, Arijit Bag   +3 more
doaj   +1 more source

N-Heterocyclic Carbenes:  Versatile Reagents for Postpolymerization Modification [PDF]

, 2016
N-Heterocyclic Carbenes:  Versatile Reagents for Postpolymerization ...
Daniel J. Coady (1493515), Christopher W. Bielawski (1278231)   +1 more
core   +1 more source