Results 11 to 20 of about 532,243 (387)
Marine Drugs, 2018 Hydroxypropyltrimethyl ammonium chitosan halogenated acetates were successfully synthesized from six different haloacetic acids and hydroxypropyltrimethyl ammonium chloride chitosan (HACC) with high substitution degree, which are hydroxypropyltrimethyl ...
Yingqi Mi +7 more
doaj +2 more sources
Synthesis of β-ketophosphonates through aerobic copper(II)-mediated phosphorylation of enol acetates [PDF]
Beilstein Journal of Organic ChemistryAerobic copper(II)-mediated phosphorylation of enol acetates with H-phosphonates leading to the formation of β-ketophosphonates was discovered. The proposed method is applicable to a wide range of H-phosphonates or phosphine oxides as PH-reagents and ...
Alexander S. Budnikov +7 more
doaj +2 more sources
Crystals, 2023 The structural parameters of the rare-earth diacetate halide trihydrates, RE(OAc)2Hal·3H2O with RE = Ce − (Pm) − Lu and Hal = Cl, Br, have been determined by low temperature, high-resolution SCXRD in order to examine the effect of lanthanide contraction ...
Hans Reuter +3 more
doaj +1 more source
Molecules, 2023 The homogeneous acetic acid synthesis-type Ru–Co–Li/N-methylpyrrolidone catalyst for CO and H2 transformations has been studied at moderately high pressures. For 1CO:2H2, low acetic acid selectivity has been observed, along with remarkable methyl acetate
Anton Lvovich Maximov +3 more
doaj +1 more source
Frontiers in Plant Science, 2022 Triterpenoids exist in a free state and/or in conjugated states, such as triterpene glycosides (saponins) or triterpene esters. There is no information on the enzyme participating in the production of triterpene esters from free triterpenes.
Han Suk Choi +3 more
doaj +1 more source
CELLULAR CYTOGENETIC STUDY FOR TREATED ROLE OF SELENIUM AND OLIVE OIL AS AN-ANTIOXIDANTS AGAINST LEAD POISONING IN FEMALES MICE BONE MARROW CELLS [PDF]
Basrah Journal of Veterinary Research, 2012 The present study was designed to investigate the cellular cytogenetic effect of lead poisoning and the therapeutic role of selenium and olive oil as an antioxidant in mouse bone marrow cells.
a .J. AL-Khalid Majdy .F. Majeed Adel. J. Hussein +1 more
doaj +1 more source
Confirming the existence of π-allyl-palladium intermediates during the reaction of meta photocycloadducts with palladium(ii) compounds [PDF]
, 2000 The transient existence of π-allyl-palladium intermediates formed by the reaction of Pd(OAc)2 and anisole-derived meta photocycloadducts has been demonstrated using NMR techniques.
Penkett, Clive S +3 more
core +11 more sources
Journal of the American Chemical Society, 2020 A stereodivergent Pd/Cu catalyst system has been developed for the unprecedented dynamic kinetic asymmetric transformation (DyKAT) of racemic unsymmetrical 1,3-disubstituted allylic acetates with prochiral aldimine esters. A series of α,α-disubstituted α-
R. He +6 more
semanticscholar +1 more source
Acta Crystallographica Section E Structure Reports Online, 2011 The title compound, C(21)H(29)ClO(3) [systematic name (8R,9S,10R,13S,14S,17S)-4-chloro-3-oxoandrost-4-en-17β-yl acetate], is a 4-chloro derivative of testosterone, used as an anabolic androgenic agent or applied topically in ophthalmological and dermatological treatments. The absolute configurations at positions 8, 9, 10, 13, 14 and 17 were established
E. Maccaroni +3 more
openaire +4 more sources
Current Aspects of Prevention of Coal Freezing by Means of Inorganic and Organic Reagents [PDF]
SHS Web of Conferences, 2021 In the cold season, irregular coal supplies to coke plants are aggravated by the need to heat the coal cars. Thawing of rail cars in garages (enclosures) is the least efficient and most expensive approach. Treatment of the coal concentrates with chemical
Shmeltser Ekaterina +2 more
doaj +1 more source