نتایج جستجو برای: phosphite ester

تعداد نتایج: 37751  

Journal: :Chemical communications 2005
Lavinia Panella Jaap Broos Jianfeng Jin Marco W Fraaije Dick B Janssen Margot Jeronimus-Stratingh Ben L Feringa Adriaan J Minnaard Johannes G de Vries

Papain, modified at Cys-25 with a monodentate phosphite ligand and complexed with Rh(COD)2BF4, is an active catalyst in the hydrogenation of methyl 2-acetamidoacrylate.

Sayyed Zahra Sayyed-Alangi

Stable derivatives of oxaphosphaphenanthrenes were prepared using multicomponent reactions of 3-bromo-2-naphthol, dialkyl acetylenedicarboxylate and trimethyl or triphenyl phosphite under microwave conditions with good yields. 

Akbari, Davood, bolhagh, Saber, Dehestani, Ali, Gerami, Mahyar, Haghpnah, Mostafa,

In this study, the effect of exogenpous Azelaic acid and potassium phosphite on some antioxidant enzymes activity, lignin synthesis and metabolic pathways were investigated in Eryngium caucasicum. This experiment was performed in a completely randomized design in controlled consitions. Plants at the three-leaf stage were treated with potassium phosphite (2 g/L) and azelaic acid (1 mM) by sprayi...

Journal: :Acta Crystallographica Section E Structure Reports Online 2004

2015
Gymama Slaughter Brian Stevens Bruno Scrosati

Effective protection of power sources from corrosion is critical in the development of abiotic fuel cells, biofuel cells, hybrid cells and biobateries for implantable bioelectronics. Corrosion of these bioelectronic devices result in device inability to generate bioelectricity. In this paper Al/Au/ZnO was considered as a possible anodic substrate for the development of a hybrid cell. The protec...

Journal: :Dalton transactions 2014
Song Gao Mao-Long Chen Zhao-Hui Zhou

In neutral media, reactions of gadolinium ethylenediaminetetraacetates with phosphorous acid result in the formation of the mixed-ligand polymeric complex K3n[Gd(EDTA)(HPO3)]n·7nH2O () and dimeric complex Na6[Gd2(EDTA)2(HPO3)2]·2.5NaCl·21H2O () (H4EDTA = ethylenediaminetetraacetic acid) in warm solution. Further substitution with citric acid gives the monomeric gadolinium citrate with EDTA (NH4...

2017
Anja Poehlein Hristo Najdenski Diliana D Simeonova

We present the first 3.315-Mbp assembled draft genome sequence of Flavobacterium succinicans strain DD5b. This bacterium is a phosphite-assimilating representative of the genus Flavobacterium isolated from guts of the zooplankton Daphnia magna.

Journal: :Chemical communications 2014
Gary M Noonan Christopher J Cobley Thomas Mahoney Matthew L Clarke

Using the phospholane-phosphite ligand, BOBPHOS, almost perfect regioselectivities and high enantioselectivities (up to 92% ee) are observed in Rh catalysed enantioselective hydroformylation of vinyl arenes. This can be achieved under solvent-free conditions.

Journal: :Journal of the American Chemical Society 2005
Tina L Amyes John P Richard James J Tait

We report that the binding of phosphite dianion to orotidine 5'-monophosphate decarboxylase (OMPDC) results in an 80 000-fold increase in kcat/Km for decarboxylation of the truncated substrate, 1-(beta-d-erythrofuranosyl)orotic acid (EO), which lacks a 5'-phosphodianion moiety. The intrinsic binding energy (IBE) of phosphite dianion in the transition state is 7.8 kcal/mol, which represents a ve...

Journal: :Chemical science 2016
Abhijnan Ray Choudhury Santanu Mukherjee

An enantioselective dearomatization of isoquinolines has been developed using chiral anion-binding catalysis. This transformation, catalyzed by a simple and easy to prepare tert-leucine-based thiourea derivative, makes use of silyl phosphite as a nucleophile and generates cyclic α-aminophosphonates. This is the first time asymmetric anion-binding catalysis has been applied to the synthesis of α...

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