نتایج جستجو برای: stereoelectronic effect

تعداد نتایج: 1641819  

2016
Yan Qiao Xinhuan Chen Donghui Wei Junbiao Chang

Hydroacylation reactions and aza-benzoin reactions have attracted considerable attention from experimental chemists. Recently, Wang et al. reported an interesting reaction of N-heterocyclic carbene (NHC)-catalyzed addition of aldehyde to enamide, in which both hydroacylation and aza-benzoin reactions may be involved. Thus, understanding the competing relationship between them is of great intere...

Journal: :Physical chemistry chemical physics : PCCP 2011
Alberto Lesarri Alicia Vega-Toribio Richard D Suenram Dale J Brugh Davood Nori-Shargh James E Boggs Jens-Uwe Grabow

The conformational and structural properties of the inhalational anesthetic isoflurane (1-chloro-2,2,2-trifluoroethyl difluoromethyl ether) have been probed in a supersonic jet expansion using Fourier-transform microwave (FT-MW) spectroscopy. Two conformers of the isolated molecule were identified from the rotational spectrum of the parent and several (37)Cl and (13)C isotopologues detected in ...

Journal: :Molecules 2017
Michel Ferreira Hervé Bricout Sébastien Tilloy Eric Monflier

The behaviour of platinum(II) and palladium(0) complexes coordinated by various hydrosoluble monodentate phosphane ligands has been investigated by 31P{¹H} NMR spectroscopy in the presence of randomly methylated β-cyclodextrin (RAME-β-CD). This molecular receptor can have no impact on the organometallic complexes, induce the formation of phosphane low-coordinated complexes or form coordination ...

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