Results 31 to 40 of about 17,652,409 (178)
Journal of Education, Health and Sport, 2017 UDC 612.017.1-02:616-001.316-036.8-085.275.14]-092.9 The trauma of the chest is one of the most serious chest injuries and also causes of mortality in 25% of cases, giving way mortality from head injuries and spinal cord [4, 5]. It should be noted
Maria Marushchak +3 more
doaj +3 more sources
A new reaction route for the synthesis of 2-methyl-5-ethylpyridine
, 2017 In this work, a novel synthesis route to produce 2-methyl-5-ethylpyridine (MEP) from the cyclic acetaldehyde ammonia trimer (AAT) is explored.
Leo Schmid +3 more
core +2 more sources
STUDIES IN THE PYRIDINE SERIES. PART II. A NEW SYNTHESIS OF 2-METHYL-4-ETHYLPYRIDINE.
, 1939 The monostyryl base, obtained from 2 :15.-dimethyl-4-ethylpyridine, has been oxidised to 2-methy1:4-ethy1pyridine-a-carboxylic acid, which is decarhoxylated to 2-methY1-4- ethylpyridine. The picrate of the latter, m.p. x42°, on admixture with the picrate
RAFAT HUSAIN SIDDIQUI, ABDUL QUDDUS KHAN
core +1 more source
Natural Product Communications, 2009 The structure of a new secondary metabolite from Streptomyces sp. was determined as 4-acetyl-1,3-dihydroimidazo[4,5-c]pyridin-2-one by synthesis of the natural product itself and of the regioisomeric 7-acetylimidazo[4,5-b]pyridine derivative.
Tobias Bender, Paultheo von Zezschwitz
doaj +1 more source
STUDIES IN THE PYRIDINE SERIES. PART I. AN ATTEMPT TO SYNTHESISE 2-METHYL-4-ETHYLPYRIDINE.
, 1939 2 : 6-Dimethyl-4-ethyl-1 : 4 dihvdropyridine-3 : 5-dicarboxylate has been obtained by condensing ethyl acetoacetate, propionaldehyde, ammonia in presence of piperidine. The dihydro ester, on oxidation in ether, solution with nitrous fumes or by iodine in
RAFAT HUSAIN SIDDIQUI
core +1 more source
Triruthenium alkylidyne cluster complexes [H2Ru3(CO)9(μ3-CX)] (X=pyridine, 4-ethylpyridine) [PDF]
, 1994 Crystal structure analyses of nonacarbonyl-1K3C, - 2K3 C,3 K3 C-di-#-hydrido - l :2x2 H;2:3 K'-H-# 3-(pyrid-1- ylmethylidyne)-triangulo-triruthenium, [Ru3(#-H)2- (#3-C6HsN)(CO)9], (I), and nonacarbonyl-lK3C,- 2 K3C,3 K3C-# 3-[(4-ethylpyrid- 1 -yl)met ...
Wong, WY, Wong, WT
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Chemistry – A European Journal, EarlyView.A facile sonochemical method for rapid and gram‐scale synthesis of ligand‐tunable cobalt‐oxo‐cubanes is reported. Electrochemical studies reveal a Co4O4‐centered one‐electron oxidation and PCET pathway, while identifying Co2+ impurities as key disruptors of true cubane redox chemistry.
Satyapriya Nath +8 more
wiley +1 more source
Heteroatom‐Doped Graphdiynes and Their Applications in Photo‐/Electro‐Catalytic CO2 Conversion
Carbon Innovation, EarlyView.This review highlights the versatile role of doped graphdiyne (GDY) in boosting CO2 conversion, where metal and non‐metal doping simultaneously tune the electronic structure, create abundant active sites, and improve charge separation, light harvesting, and CO2 adsorption.
Fangzhou Yang +3 more
wiley +1 more source
Artificial Metalloenzymes with Two Catalytic Cofactors for Tandem Abiotic Transformations
Angewandte Chemie, Volume 137, Issue 8, February 17, 2025.Sequential incorporation of an organic photocatalytic cofactor and a metal cofactor into streptavidin leads to artificial metalloenzymes (ArMs) that catalyze tandem abiotic transformations such as enantioselective formal C−H hydroxylation and photooxidation‐Michael addition. This work introduces a programmable approach for the construction of ArMs that
Weijin Wang +6 more
wiley +2 more sources
, 1994 Reaction of 2,6-lutidine with 2 equivalents of (n)BuLi followed by addition of 2-adamantanone affords the doubly functionalized 2,6-di-(2-oxy(2-adamantylidine))ethylpyridine (2a).
KELLOGG, RM +5 more
core +2 more sources