منابع مشابه
Cationic 5-phosphonio-substituted N-heterocyclic carbenes.
2-Phosphanyl-substituted imidazolium salts 2-PR2(4,5-Cl-Im)[OTf] (9a,b[OTf]) (4,5-Cl-Im = 4,5-dichloro-1,3-bis(2,6-di-isopropylphenyl)-imidazolium) (a: R = Cy, b: R = Ph) are prepared from the reaction of R2PCl (R = Cy, Ph) with NHC 8 (4,5-dichloro-1,3-bis(2,6-di-isopropylphenyl)-imidazolin-2-ylidene) in the presence of Me3SiOTf. 5-Phospanyl-substituted imidazolium salts 5-PR2(2,4-Cl-Im)[OTf] (...
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The N-heterocyclic carbenes (NHC) now hold a preferredligand status in organic and organometallic chemistry. Their role in catalysis continues to grow. When the editorial staff at the Beilstein Journal of Organic Chemistry contacted me to act as a guest editor for the thematic series “N-Heterocyclic carbenes”, I was more than happy to accept what appeared to me to be a simple and exciting endea...
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‘Tree pruning’ (TP) is an algorithm for probabilistic inference on binary Markov random fields. It has been recently derived by Dror Weitz and used to construct the first fully polynomial approximation scheme for counting independent sets up to the ‘tree uniqueness threshold.’ It can be regarded as a clever method for pruning the belief propagation computation tree, in such a way to exactly acc...
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We give here a comparative study of the mathematical analysis of two (classes of) discretisation schemes for the computation of approximate solutions to incompressible two phase flow problem in homogeneous porous media. The first scheme is the well-known finite volume scheme with a two-point flux approximation, classically used in industry. The second class contains the so-called approximate gr...
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Aspirin has emerged as a remarkably safe, inexpensive, and effective drug for the secondary prevention of the complications of atherosclerotic disease. It acts by inhibiting the enzyme prostaglandin (PG) G/H synthase, actually a bifunctional protein that sequentially catalyzes the conversion of arachidonic acid to the highly reactive endoperoxide intermediates PGG2 and PGH2 via its cyclooxygena...
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ژورنال
عنوان ژورنال: Journal of Organometallic Chemistry
سال: 2015
ISSN: 0022-328X
DOI: 10.1016/j.jorganchem.2015.03.012