Results 1 to 10 of about 15,269 (248)

Synthesis of β-ketophosphonates through aerobic copper(II)-mediated phosphorylation of enol acetates [PDF]

Beilstein Journal of Organic Chemistry
Aerobic 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, Igor B. Krylov, Fedor K. Monin, Valentina M. Merkulova, Alexey I. Ilovaisky, Liu Yan, Bing Yu, Alexander O. Terent’ev   +7 more
doaj   +2 more sources

Structural Evolution in a Series of Isomorphous Rare Earth Compounds as Response of Lanthanide Contraction

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, Marcel Böltken, Maik Horstmann, Markus Haase   +3 more
doaj   +1 more source

Direct Homogeneous Synthesis of Compounds with Two O Atoms and Long-Chain Hydrocarbons from CO and H₂: Co–Ru/N-methylpyrrolidone Catalyst

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, Mayya V. Kulikova, Alexey E. Kuz’min, Mikhail I. Ivantsov   +3 more
doaj   +1 more source

Clostebol acetate [PDF]

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, MELE, ANDREA, DEL ROSSO, RENATO, MALPEZZI, LUCIANA   +3 more
openaire   +4 more sources

Characterization of a Pentacyclic Triterpene Acetyltransferase Involved in the Biosynthesis of Taraxasterol and ψ-Taraxasterol Acetates in Lettuce

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, Jung Yeon Han, Eun Ju Cheong, Yong Eui 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, Wala   +1 more
doaj   +1 more source

Iron-catalyzed [4 + 2] annulation of α,β-unsaturated ketoxime acetates with enaminones toward functionalized pyridines

Green Synthesis and Catalysis, 2021
The iron-catalyzed [4 ​+ ​2] annulation of α,β-unsaturated ketoxime acetates with enaminones has been developed, providing efficient access to highly substituted pyridines in moderate to good yields.
Jindian Duan, Gaochen Xu, Binsen Rong, Huan Yan, Sai Zhang, Qinghuan Wu, Ning Zhu, Kai Guo   +7 more
doaj   +1 more source

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, Kormer Maryna, Lyalyuk Vitalij   +2 more
doaj   +1 more source

Identification of acetates in elasmopalpulus lignosellus pheromone glands using a newly created mass spectral database and kóvats retention indices

Química Nova, 2007
Based on a specially created mass spectral database utilizing 23 tetradecenyl and 22 hexadecenyl acetate standards along with Kóvats retention indices obtained on a very polar stationary phase [poly (biscyanopropyl siloxane)] (SP 2340), (Z)-9-hexadecenyl
Gulab N. Jham, Alexsandro A. da Silva, Eraldo R. Lima, Paulo A. Viana   +3 more
doaj   +1 more source

Gas-liquid chromatography of dialkyl, alkyl acyl, and diacyl derivatives of glycerol

Journal of Lipid Research, 1969
Dialkyl, alkyl acyl, and diacyl glycerols were resolved as trimethylsilyl ethers and as acetates by gas-liquid chromatography on a nonpolar stationary phase (OV-1).
Randall Wood, W.J. Baumann, Fred Snyder, H.K. Mangold   +3 more
doaj   +1 more source