- Lipase active site covalent anchoring of Rh(NHC) catalysts: Towards chemoselective artificial metalloenzymes
-
A Rh(NHC) phosphonate complex reacts with the lipases cutinase and Candida antarctica lipase B resulting in the first (soluble) artificial metalloenzymes formed by covalent active site-directed hybridization. When compared to unsupported complexes, these
- Basauri-Molina,Riemersma,Würdemann,Kleijn,Klein Gebbink
-
supporting information
p. 6792 - 6795
(2015/04/22)
-
- Improved microwave synthesis of unsymmetrical N,N'-diaryl-1,2-aminoethane and imidazolidinium salts as precursors of N-heterocyclic carbenes
-
Lithium aluminium hydride reduction of bis-unsymmetric-diaryloxamides 3 is difficult to accomplish especially for the sterically hindered mesityl derivative. Using microwaves LAH reduction of 3a,d was successful in a short time, however, with cleavage of the ether linkage to give compounds 11a,d. Extension of this method enabled the reduction of bis-oxamide derivatives 13 to the corresponding tetraamine derivative 14 which was then converted to the bis-imidazolidinium salt 15. Application of this method led to rapid reduction of unsymmetric N,N'-diaryloxamides 16 to the corresponding N,N'- diarylethylenediamines 17 which were converted to their corresponding imidazolidinium salts 18. the Partner Organisations 2014.
- Ibrahim, Yehia A.,Al-Awadi, Nouria A.,Al-Azemi, Talal F.,John, Elizabeth
-
p. 38869 - 38876
(2014/11/08)
-
- Palladium-catalyzed arylation of aldehydes with bromo-substituted 1,3-diaryl-imidazoline carbene ligand
-
The combination of 0 valent palladium precursor and bromo-substituted 1,3-diaryl-imidazoline carbene ligand precursor such as 1-(2-bromophenyl)-3-(2,6-diisopropylphenyl)-imidazolinium chloride 1a exhibited high catalytic activity for the 1,2-addition of arylboronic acids to aldehydes including aqueous formaldehyde.
- Yamamoto, Tetsuya,Furusawa, Takuma,Zhumagazin, Azamat,Yamakawa, Tetsu,Oe, Yohei,Ohta, Tetsuo
-
-
- Synthesis, structure, and polymerization activity of cyclopentadienylnickel(II) N-heterocyclic carbene complexes: Selective cross-metathesis in metal coordination spheres
-
The N-heterocyclic carbene (NHC) complexes [(RC5H 4)Ni(X)(NHC)] (2-5) have been prepared by treating nickelocene [or 1, 1′-bis(alkenyl)nickelocene] with a suitable carbene precursor. The alkenylcyclopentadienido complexes 4 and 5 und
- Buchowicz, Wldzimierz,Wojtczak, Wioleta,Pietrzykowski, Antoni,Lupa, Anna,Jerzykiewicz, Lucjan B.,Makal, Anna,Wozniak, Krzysztof
-
scheme or table
p. 648 - 656
(2010/05/11)
-
- Homodinuclear ruthenium catalysts for dimer ring-closing metathesis
-
(Chemical Equation Presented) Two ring or not to ring: Novel diruthenium olefin metathesis catalysts show a tendency to avoid oligomerization and favor cyclic dimerization when the distances between the ruthenium centers and between the diene extremities match (see scheme).
- Tzur, Eyal,Ben-Asuly, Amos,Diesendruck, Charles E.,Goldberg, Israel,Lemcoff, N. Gabriel
-
supporting information; experimental part
p. 6422 - 6425
(2009/03/11)
-
- Design and synthesis of thioether-imidazolium chlorides as efficient ligands for palladium-catalyzed Suzuki-Miyaura coupling of aryl bromides with arylboronic acids
-
The catalyst composed of 0.25-0.025 mol % of [Pd(allyl)Cl]2 and 0.5-0.05 mol % of the thioether-imidazolium chloride 3c was proven to be efficient in the Suzuki-Miyaura cross-coupling reactions of aryl bromides with arylboronic acids.
- Kuriyama, Masami,Shimazawa, Rumiko,Shirai, Ryuichi
-
p. 9393 - 9400
(2008/02/11)
-
- Development of building blocks for the synthesis of N-heterocyclic carbene ligands
-
(Chemical Equation Presented) The synthesis of a series of NHC building blocks that can then be incorporated into more complicated structures by palladium catalysis is reported. This approach is used for the synthesis of three amino acids containing NHC s
- Xu, Guopin,Gilbertson, Scott R.
-
p. 4605 - 4608
(2007/10/03)
-