نتایج جستجو برای: palladium ii

تعداد نتایج: 590020  

Journal: :Chemical communications 2013
Meiling Li Alison Hawkins David M Barber Patrick Bultinck Wouter Herrebout Darren J Dixon

The enantioselective synthesis of heavily decorated spirolactams has been accomplished via an arylative or vinylative allene carbocyclisation cascade. Mediated by silver phosphate, a range of allene-linked pro-nucleophiles and aryl or vinyl iodides were reacted in the presence of catalytic Pd(OAc)2 and chiral bis(oxazoline) ligands to afford the spirolactam products in good yields and high enan...

Journal: :Chemical communications 2014
Sandeep Pimparkar Masilamani Jeganmohan

N-Methyl or methoxy benzamides reacted with benzynes in the presence of Pd(OAc)2, organic acid and K2S2O8 in CH3CN yielding tricyclic phenanthridinone derivatives in good yields.

Journal: :Chemical communications 2012
Rony S Khnayzer Jörg Blumhoff Jordan A Harrington Alexandre Haefele Fan Deng Felix N Castellano

Upconversion photochemistry occurring between palladium(II) octaethylporphyrin (PdOEP, 1) and 9,10-diphenylanthracene (DPA, 2) in toluene successfully sensitizes nanostructured WO(3) photoanodes (E(g) = 2.7 eV) to sub-bandgap non-coherent green photons at low power density.

Journal: :Molecules 2013
Wing-Nga Sit Chun-Wo Chan Wing-Yiu Yu

A palladium(II)-catalyzed ortho-benzoxylation of 2-arylpyridines with aryl acylperoxides was developed. With pyridyl as directing group, the benzoxylation reaction exhibits remarkable regioselectivity and excellent functional group tolerance, providing the products in up to 87% yield.

Journal: :Chemical communications 2008
Papapida Pornsuriyasak Nigam P Rath Alexei V Demchenko

This study focusses on a new concept for oligosaccharide synthesis based on 4-(pyridin-2-yl)thiazol-2-yl thioglycosides that can either act as effective glycosyl donors or can be deactivated by stable bidentate complexation with palladium(II) bromide.

Journal: :Chemical communications 2010
David A Leigh Paul J Lusby Roy T McBurney Mark D Symes

A second generation palladium(II)-complexed molecular shuttle, featuring structural changes to the size and shape of the macrocycle, shows significantly increased rates of shuttling and improved co-conformational bias compared to the original system.

Journal: :Chemical communications 2014
Yun-He Xu Tao He Qiu-Chi Zhang Teck-Peng Loh

A cyclization reaction between enamides and alkynes catalyzed by palladium(II) acetate is described. In this method, the molecular oxygen serves as an efficient oxidant for the Pd(II)/Pd(0) catalytic cycle. The simple reaction conditions permit this methodology to be used as a general tool for the preparation of multi-substituted pyrroles.

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