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Showing 25 to 36 of 17362 entries
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Regio- and Chemoselective Kumada-Tamao-Corriu Reaction of Aryl Alkyl Ethers Catalyzed by Chromium Under Mild Conditions.

Journal of the American Chemical Society

Cong X, Tang H, Zeng X.
PMID: 26469380
J Am Chem Soc. 2015 Nov 18;137(45):14367-72. doi: 10.1021/jacs.5b08621. Epub 2015 Nov 04.

Acting as an environmentally benign synthetic tool, the cross-coupling reactions with aryl ethers via C-O bond activation have attracted broad interest. However, the functionalizations of C-O bonds are mainly limited to nickel catalysis, and selectivity has long been a...

Application of soft lithography to metal-induced lateral crystallization of amorphous Si thin films involving self-assembly monolayers and atomic layer deposition.

Journal of nanoscience and nanotechnology

Kim KH, Kim JE, Bae SM, Chung TM, Kim CG, An KS, Hwang JH.
PMID: 25936021
J Nanosci Nanotechnol. 2014 Aug;14(8):5885-8. doi: 10.1166/jnn.2014.8323.

Micro-contact printing of self-assembly monolayers (SAMs), i.e., octadecyl-trichlorosilane (OTS) was combined with self limiting atomic layer deposition in order to fabricate the selective deposition of nickel oxide on amorphous Si thin films. The localized nickel species facilitated metal-induced crystallization...

Synthesis and characterization of nickel nanoparticles prepared using the aquolif approach.

Journal of nanoscience and nanotechnology

Menezes JC, Ferreira NS, Abraçado LG, Macêdo MA.
PMID: 25936025
J Nanosci Nanotechnol. 2014 Aug;14(8):5903-10. doi: 10.1166/jnn.2014.8727.

We report on the synthesis of nickel nanoparticles using a combination of chemical reduction and freezing-drying processes that we named the aquolif approach. The X-ray diffraction (XRD) patterns reveal that the synthesized nanoparticles were composed of a single metallic...

CLINICAL AND COST-EFFECTIVENESS OF INSULIN DELIVERY WITH V-GO(®) DISPOSABLE INSULIN DELIVERY DEVICE VERSUS MULTIPLE DAILY INJECTIONS IN PATIENTS WITH TYPE 2 DIABETES INADEQUATELY CONTROLLED ON BASAL INSULIN.

Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists

Lajara R, Davidson JA, Nikkel CC, Morris TL.
PMID: 26866702
Endocr Pract. 2016 Jun;22(6):726-35. doi: 10.4158/EP151182.OR. Epub 2016 Feb 01.

OBJECTIVE: To compare two methods of delivering intensified insulin therapy (IIT) in patients with type 2 diabetes inadequately controlled on basal insulin ± concomitant antihyperglycemic agents in a real-world clinical setting.METHODS: Data for this retrospective study were obtained using...

Structural, Magnetic, and Electronic Properties of Mixed Spinel NiFe.

Inorganic chemistry

Lyubutin IS, Lin CR, Starchikov SS, Baskakov AO, Gervits NE, Funtov KO, Tseng YT, Lee WJ, Shih KY, Lee JS.
PMID: 28968099
Inorg Chem. 2017 Oct 16;56(20):12469-12475. doi: 10.1021/acs.inorgchem.7b01935. Epub 2017 Oct 02.

A series of nickel-chromium-ferrite NiFe

Stereospecific Synthesis of Tetrahydronaphtho[2,3-b]furans Enabled by a Nickel-Promoted Tandem Reductive Cyclization.

Organic letters

Peng Y, Xiao J, Xu XB, Duan SM, Ren L, Shao YL, Wang YW.
PMID: 27658859
Org Lett. 2016 Oct 07;18(19):5170-5173. doi: 10.1021/acs.orglett.6b02665. Epub 2016 Sep 23.

A Ni-mediated cascade to a stereoselective synthesis of trans-tetrahydronaphtho[2,3-b]furans is efficiently achieved for the first time. The mild reductive system can be easily generated from inexpensive and air-stable materials and shows a broad positional tolerance of substituents that were...

Activation of Single-Component Nickel(II) Polyethylene Catalysts via Phase Transfer of Fluorous Phosphine Ligands.

Journal of the American Chemical Society

Xi Z, Bazzi HS, Gladysz JA.
PMID: 26300472
J Am Chem Soc. 2015 Sep 02;137(34):10930-3. doi: 10.1021/jacs.5b06562. Epub 2015 Aug 24.

The nickel salicylaldiminato phosphine complexes [1,2,3-C6H3(9-anthracenyl)O(CH═N(2,6-C6H3(iPr)2)]Ni(Me)[P(4-C6H4R)3] (4; R = a, (CH2)2Rf8; b, (CH2)3Rf8; c, H (Rf8 = (CF2)7CF3)) are prepared from the corresponding phosphines 3a-c and nickel NCMe adduct (46-68%). These are applied as catalysts for ethylene polymerization in...

Nickel-Catalyzed Difluoroalkylation of (Hetero)Arylborons with Unactivated 1-Bromo-1,1-difluoroalkanes.

Angewandte Chemie (International ed. in English)

Xiao YL, Min QQ, Xu C, Wang RW, Zhang X.
PMID: 27060704
Angew Chem Int Ed Engl. 2016 May 04;55(19):5837-41. doi: 10.1002/anie.201601351. Epub 2016 Apr 06.

A nickel-catalyzed cross-coupling between (hetero)arylborons and unactivated 1-bromo-1,1-difluoroalkanes has been developed. The use of two ligands (a bidentate bipyridine-based ligand, 4,4'-ditBu-bpy, and a monodentate pyridine-based ligand, DMAP) offers a highly efficient nickel-based catalytic system to prepare difluoroalkylated arenes which...

Nickel-Mediated Asymmetric Allylic Alkylation between Nitroallylic Acetates and Acyl Imidazoles.

Organic letters

Wang J, Wang P, Wang L, Li D, Wang K, Wang Y, Zhu H, Yang D, Wang R.
PMID: 28862455
Org Lett. 2017 Sep 15;19(18):4826-4829. doi: 10.1021/acs.orglett.7b02264. Epub 2017 Sep 01.

A nickel-mediated asymmetric allylic alkylation reaction between imidazole-modified ketones and nitroallylic acetates is presented. This reaction is catalyzed by a simple chiral diamine-nickel catalyst under mild conditions and leads to a series of novel enantioenriched α-allylic adducts in moderate...

Enhanced NH3-Sensitivity of Reduced Graphene Oxide Modified by Tetra-α-Iso-Pentyloxymetallophthalocyanine Derivatives.

Nanoscale research letters

Li X, Wang B, Wang X, Zhou X, Chen Z, He C, Yu Z, Wu Y.
PMID: 26403926
Nanoscale Res Lett. 2015 Dec;10(1):373. doi: 10.1186/s11671-015-1072-3. Epub 2015 Sep 24.

Three kinds of novel hybrid materials were prepared by noncovalent functionalized reduced graphene oxide (rGO) with tetra-α-iso-pentyloxyphthalocyanine copper (CuPc), tetra-α-iso-pentyloxyphthalocyanine nickel (NiPc) and tetra-α-iso-pentyloxyphthalocyanine lead (PbPc) and characterized by Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-vis), Raman spectra,...

Photoelectron velocity-map imaging and theoretical studies of heteronuclear metal carbonyls MNi(CO)3(-) (M = Mg, Ca, Al).

The Journal of chemical physics

Xie H, Zou J, Yuan Q, Fan H, Tang Z, Jiang L.
PMID: 27036444
J Chem Phys. 2016 Mar 28;144(12):124303. doi: 10.1063/1.4944529.

The heteronuclear metal carbonyl anions MNi(CO)3(-) (M = Mg, Ca, Al) have been investigated using photoelectron velocity-map imaging spectroscopy. Electron affinities of neutral MNi(CO)3 (M = Mg, Ca, Al) are measured from the photoelectron spectra to be 1.064 ±...

The role of nickel allergy in hand dermatitis and its impact on handling cupronickel currency coins. A comparative cohort study from Kuwait.

Postepy dermatologii i alergologii

Almutairi N, Almutawa F.
PMID: 28951705
Postepy Dermatol Alergol. 2017 Aug;34(4):313-321. doi: 10.5114/ada.2017.69309. Epub 2017 Aug 01.

INTRODUCTION: Contact with nickel-releasing coins as a cause of hand dermatitis has been debated.AIM: Studying a hand dermatitis risk from handling Kuwaiti cupronickel coins among nickel-allergic and nickel non-allergic subjects.MATERIAL AND METHODS: One hundred hand dermatitis patients (group I:...

Showing 25 to 36 of 17362 entries