Regioselective Transformation of the Cyano Group of Triterpene α,β-Alkenenitriles
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DOI: 10.1007/s10600-017-2091-3
Abstract: Unsaturated acids, including difficultly accessible ceanothane-type ones, were prepared via alkaline hydrolysis of semi-synthetic triterpenoids with 1-cyano- or 3-methyl-1-cyanoalkene fragments in five-membered ring A. Regioselective reduction of 1-cyano-19β,28-epoxy-2-nor-18αH-olean-1(3)-ene by DIBAL-H synthesized 2-aminomethyl-19β,28-epoxy-2-nor-18αH-olean-1(3)-ene. The synthesized triterpene… read more here.
Keywords: transformation cyano; triterpene alkenenitriles; cyano group; regioselective transformation ... See more keywords
Water bridges are essential to neonicotinoids: Insights from synthesis, bioassay and molecular modelling studies
Sign Up to like & getrecommendations! Published in 2019 at "Chinese Chemical Letters"
DOI: 10.1016/j.cclet.2018.05.013
Abstract: Abstract Water-bridged H-bonds have been observed in many cases of ligand-receptor recognitions. To explore the roles of water bridges in the binding of neonicotinoids with receptors, twenty-four neonicotinoid compounds with nine fragments, including 1 H… read more here.
Keywords: water; cyano group; water bridge; bridges essential ... See more keywords
Direct introduction of cyano group on furoxan ring
Sign Up to like & getrecommendations! Published in 2017 at "Mendeleev Communications"
DOI: 10.1016/j.mencom.2017.11.008
Abstract: Potassium cyanide reacts with 3-aryl-4-phenylsulfonylfuroxan/ furazan under mild conditions in DMF at room temperature in the presence of 18-crown-6 to afford 3-aryl-4-cyanofuroxan/ furazan in 45–50% yield. read more here.
Keywords: furoxan ring; cyano group; introduction cyano; group furoxan ... See more keywords
An effect of cation's cyano group on interactions between organic solutes and ionic liquids elucidated by thermodynamic data at infinite dilution
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DOI: 10.1016/j.molliq.2017.08.079
Abstract: Abstract New measurements on infinite dilution activity coefficients (γ∞) of 48 molecular solutes (including: alkanes, alkenes, alkynes, aromatics, ethers, alcohols, ketones, pyridine, thiophene, acetonitrile and 1-nitropropane) in 1-(3-cyanopropyl)-3-methylimidazolium dicyanamide ionic liquid (IL) are reported in… read more here.
Keywords: cation; infinite dilution; cyano group; group ... See more keywords
Experimental Demonstration of a Sizeable Nonclassical CH···G Hydrogen Bond in Cyclohexane Derivatives: Stabilization of an Axial Cyano Group.
Sign Up to like & getrecommendations! Published in 2017 at "Organic letters"
DOI: 10.1021/acs.orglett.7b03287
Abstract: Base-catalyzed equilibration of anancomeric cyanocyclohexanes demonstrates that replacement of cis-3,5-dimethyl holding groups with electron-withdrawing CF3 groups dramatically increases the proportion of the axial cyano isomer present at equilibrium. The CF3 groups exert an effect on… read more here.
Keywords: cyano group; hydrogen bond; group; axial cyano ... See more keywords
Pd-Catalyzed intramolecular C–H addition to the cyano-group: construction of functionalized 2,3-fused thiophene scaffolds
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DOI: 10.1039/c7qo01000a
Abstract: An efficient synthesis of 2,3-fused thiophenes was demonstrated through a Pd-catalyzed intramolecular C–H addition of thiophenes bearing cyanohydrin components at the C(3) positions to nitriles. A diversity of functionalized fused thiophenes with saturated six-, seven-… read more here.
Keywords: addition cyano; intramolecular addition; cyano group; functionalized fused ... See more keywords
Synthesis and properties of benzocyclobutene-terminated imide-containing cyano group
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DOI: 10.1177/0954008318821710
Abstract: Benzocyclobutene (BCB) resins have aroused much interest because of their excellent physical and chemical properties. Unfortunately the temperature required to induce cross-linking in typical BCBs is higher than 250°C, which restricts their applications. In this… read more here.
Keywords: terminated imide; cyano group; group; synthesis properties ... See more keywords
Activation of the Cyano Group at Imidazole via Copper Stimulated Alcoholysis
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DOI: 10.3390/inorganics7070087
Abstract: Reactions of 4,5-dicyano-1-methylimidazole with CuX2 (X = Cl, Br) in alcohol solvents (ethanol and methanol) resulted in the formation of Cu(II) carboximidate complexes [CuCl2(5- cyano-4-C(OEt)N-1-methylimidazole)(EtOH)] (1), [Cu2(µ-Cl)2Cl2(5-cyano-4-C(OMe)N-1-methylimidazole)2] (2), [Cu2(µ-Br)2Br2(5-cyano-4-C(OMe)N-1-methylimidazole)2] (3), and [Cu2(µ-Br)2Br2(5-cyano-4-C(OEt)N-1-methylimidazole)2] (4). The structures… read more here.
Keywords: copper; group imidazole; cyano group; cyano ... See more keywords