Results 71 to 80 of about 13,233 (208)
Chemistry – A European Journal, EarlyView.This review summarizes recent advances in copper‐ and silver‐catalyzed reactions of active methylene isocyanides for the synthesis of highly substituted five‐ and six‐membered heterocycles. Emphasis is placed on [3+n] cycloadditions, annulations, and asymmetric strategies, highlighting current limitations and future opportunities in heterocycle ...
Jimil George, Kyungsoo Oh
wiley +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2015 The title compound, C23H22N2O4S, crystallized with two independent molecules (A and B) in the asymmetric unit. They have very similar conformations with the pyrrolidine ring having a twisted conformation, on the Cspiro—Cspiro bond, in both molecules.
R. Raja +4 more
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Tuning pKa in new molecules based on indolines for two-photon absorption bioimaging applications [PDF]
, 2018 Fluorescence-based biosensors have become essential tools for modern biology, allowing real-time monitoring of biological processes within living cells.
Benitez-Martin, Carlos +2 more
core
Geometry of Molecular Motions in Dye Monolayers at Various Coverages [PDF]
, 2017 Molecular motion in monolayers is thought to influence the kinetics of charge transport and recombination in systems such as dye-sensitized solar cells (DSSCs).
Vaissier, Valerie, Van Voorhis, Troy
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, 2022 Tributylphosphine catalyzed reaction of isatylidene malononitriles and bis-chalcones in chloroform at 65oC afforded the functionalized spiro[cyclohexane-1,3'-indolines] in good yields and with good diastereoselectivity. On the other hand, tributylphosphine catalyzed reaction of 3-(ethoxycarbonylmethylene)oxindoles and bis-chalcones gave functionalized ...
Hui Zheng +3 more
openaire +1 more source
Dihydroquinazolinones by Titanocene‐Catalyzed Reductive Radical Addition to Quinazolinones
Chemistry – A European Journal, EarlyView.Tri‐ and tetracyclic dihydroquinazolinones or quinazolinones by titanocene catalysis: A highly diastereoselective and efficient reductive radical addition to quinazolinones enables an unprecedented entry to pharmaceutically relevant dihydroquinazolinones by avoiding the interception of radical intermediates prior to the slow radical addition.
Thomas Heinrichs +5 more
wiley +1 more source
Investigating nano-structuring within imidazolium ionic liquids: A thermodynamic study using photochromic molecular probes [PDF]
, 2009 Following previous studies involving the thermal relaxation of spirocyclic compounds we extended our studies to investigate the formation of nano-structured domains in ionic liquids (ILs).
Byrne, Robert +3 more
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Helvetica Chimica Acta, EarlyView.We report a concise formal synthesis of (±)‐strictamine via a silylium‐catalyzed (4 + 2) annulation of a donor–acceptor cyclobutane, achieved in 13 steps from tryptamine. ABSTRACT The akuammiline alkaloids are complex monoterpene indole natural products with a rigid cage‐like architecture and diverse biological activities.
Clément Tanguy +2 more
wiley +1 more source
Synthesis and antimicrobial evaluation of spiro compound containing 1,2,4-triazole and isatin
Orbital: The Electronic Journal of Chemistry, 2011 The synthesis of 6'-Phenyl-4'-thioxo-3'-(4H-1,2,4-triazole-4-yl)-3',4'-dihydrospiro [Indoline-3,2'-[1,3,5]oxadiazine]-2-one (5a-h) is carried out by two a step reaction, beginning with acid catalyzed condensation of 4H-1,2,4-triazole-4-amine (1)
Visha P. Modi +2 more
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Green Synthesis and Catalysis, 2021 An uncommon aza-Diels-Alder reaction of electron-deficient azoalkenes and electron-deficient 3-phenacylideneoxindoles was successfully developed for convenient construction of the heterocyclic spirooxindoles.
Wenjing Shi, Jing Sun, Chao-Guo Yan
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