Results 141 to 150 of about 319,868 (397)
Chemistry – A European Journal, EarlyView.We describe a new method to produce hydrolytically stable cardiotonic steroids using a CPA‐controlled diastereoselective reductive amination of cardenolide aglycones. The oleandrin and digitoxigenin analogs exhibited promising activity against various cancer cell lines in the NCI‐60 screen.
Natasha Perry +3 more
wiley +1 more source
Swelling of acetylated wood in organic liquids
, 2005 To investigate the affinity of acetylated wood for organic liquids, Yezo spruce wood specimens were acetylated with acetic anhydride, and their swelling in various liquids were compared to those of untreated specimens. The acetylated wood was rapidly and
A. N. NAYER +10 more
core +2 more sources
Fluorenyl Cations: Synthesis and Reactivity
Chemistry – A European Journal, EarlyView.This review covers the history of fluorenyl cations from Deno's first report in 1954 on the parent fluorenyl cation to the present. The parent cation and most derivatives have only been observed as a fleeting species by mass spectrometry, UV/Vis spectroscopy, IR spectroscopy, or NMR spectroscopy while recent developments led to isolable species ...
Kanika Vashisth +5 more
wiley +1 more source
Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes for their synthesis [PDF]
, 1988 Synthetic procedures are disclosed for tetraalkyls, tetraacids, and dianhydrides substituted 1,1,1-triaryl 2,2,2-trifluoroethanes which comprises: (1) 1,1-bis (dialkylaryl) 1-aryl 2,2,2-trifluoroethane, (2) 1,1-bis (dicarboxyaryl) 1-aryl 2,2,2 ...
Alston, William B., Gratz, Roy F.
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Chemistry – A European Journal, EarlyView.One‐step synthesis of aliphatic polycarbonate (APC) polyols via upcycling of bisphenol‐A based polycarbonate (BPA‐PC) is shown. These APC polyols were further utilized to produce thermoplastic polyurethanes that exhibit excellent chemical recyclability, enabling the simultaneous hydrolysis of both carbonate and urethane bonds.
Keita Saito +3 more
wiley +1 more source
The Reaction of Carboxylic Acids and Hydrocarbons in a Silent Electric Discharge. II. The Reactions of Ethylene with Methyl Acetate and with Acetic Anhydride [PDF]
, 1969 Teruo Hiraki
openalex +1 more source
Fire-resistant phosphorus containing polyimides and copolyimides [PDF]
, 1985 Phosphorus-containing polyimides and copolyimides are synthesized in a two-step polycondensation reaction from 1- (diorganooxyphosphonl)methly 2,4- and 2,6-diaminobenzenes and tetracarboxylic anhydride. The diorgano position of the diorganooxyphosphonyl
Mikroyannidis, J. A.
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Tailored Watson–Crick Pairing Partners for Xanthosine in RNA
Chemistry – A European Journal, EarlyView.RNAs with kappa‐xanthosine (K–X) or 2‐iminocytidine‐xanthosine (2imC–X) base pairs form stable double helices that have higher melting temperatures than those of the A–U or G–U references. Access to these novel 2imC‐modified RNAs is possible through the mild, selective chemical conversion of 2‐thiocytidine RNA precursors.
Stefan Mair +5 more
wiley +1 more source
Process for curing bismaleimide resins [PDF]
, 1986 This invention relates to vinyl pyridine group containing compounds and oligomers, their advantageous copolymerization with bismaleimide resins, and the formation of reinforced composites based on these copolymers.
OTHY S.imides alone., Parker, John A.
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Chemistry – A European Journal, EarlyView.Novel merocyanine derivatives with a strong diphenyl‐dihydrophenazine donor and a series of strong electron acceptors were developed. The indanone and indandione acceptor units were modified by dicyanovinylene groups to tune acceptor strength. Among these derivatives, DPPZ‐IDD realized an ultranarrow electrochemical gap of 0.93 eV and an optical band ...
Kateřina Teichmanová +8 more
wiley +1 more source