Results 61 to 70 of about 70,860 (329)
Regioselective reactions of 3,4-pyridynes enabled by the aryne distortion model. [PDF]
, 2013 The pyridine heterocycle continues to play a vital role in the development of human medicines. More than 100 currently marketed drugs contain this privileged unit, which remains highly sought after synthetically. We report an efficient means to access di-
Garg, Neil K, Goetz, Adam E
core
Advanced Optical Materials, EarlyView.The newly developed regioselective strategy for the para‐functionalization of C(sp3)‐bridged phosphorus‐centered heterotriangulene delivers a series of donor‐acceptor emitters exhibiting thermally activated delayed fluorescence. The carbazole‐substituted compounds feature a unique combination of high photoluminescence quantum yields up to 75%, deep ...
Maximilian Schöner +8 more
wiley +1 more source
Synthetic Approaches for C-N Bonds by TiO2 Photocatalysis
Frontiers in Chemistry, 2019 Nitrogen-containing organic compounds possess the most important status in drug molecules and agricultural chemicals. More than 80% currently used drugs have at least a C-N bond.
Dongge Ma +4 more
doaj +1 more source
Sulfenamides as flame retardants [PDF]
, 2015 FIELD OF THE INVENTION The present invention is in the field of flame retardants and relates to use of sulfenamides as flame retardants, in particular in polymeric sub ...
Aubert, Melanie +3 more
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Novel Fmoc-Polyamino Acids for Solid-Phase Synthesis of Defined Polyamidoamines [PDF]
, 2011 A versatile solid-phase approach to sequence-defined polyamidoamines was developed. Four different Fmoc-polyamino acid building blocks were synthesized by selective protection of symmetrical oligoethylenimine precursors followed by introduction of a ...
Badgujar, Naresh +2 more
core +1 more source
Harnessing Carbenoid Reactivity From Imidazoles and Oxiranes
Advanced Synthesis &Catalysis, EarlyView.The combination of azole compounds and oxiranes exhibits carbenoid reactivity at elevated temperatures, as demonstrated by the successful benzoin condensation of aromatic aldehydes. Using this catalytic system to polymerize bifunctional aldehyde/oxirane monomers yields thermosets with glass transition temperatures above 100°C.
Matthias R. Steiner +4 more
wiley +1 more source
4,12-Diselena-5,6,13,14-tetraazatricyclo[9.3.0.03,7]tetradeca-1(11),3(7),5,13-tetraene
IUCrDataIn the title compound, C8H8N4Se2, two almost planar 1,2,3-selenadiazoles are annulated to a cycloocta-1,4-diene with a boat–chair conformation, giving the molecule a butterfly shape.
Dieter Schollmeyer, Heiner Detert
doaj +1 more source
(2Z)-2-(4-Chlorobenzylidene)-4-[2-(2-oxooxazoliden-3-yl)ethyl]-3,4-dihydro-2H-1,4-benzothiazin-3-one
IUCrData, 2017 In the title molecule, C20H17ClN2O3S, the oxazolidine ring is oriented towards the benzothiazine moiety so that the centroid of the former is ca 5.05 Å from the sulfur atom of the latter.
Mohamed Ellouz +4 more
doaj +1 more source
Synthetic utility and reactivity of N-alkynylazoles [PDF]
, 2015 textThe chemistry of N-alkynylazoles is a newly emerging area of chemistry with particular interest in heterocycle synthesis. Synthetic preparations of this class of molecule have shown an increasing presence in literature, however, the synthetic ...
Gilbreath, Bradford Lynd
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The dependence of the molecular first hyperpolarizabilities of merocyanines on ground-state polarization and length [PDF]
, 1994 We report here the dipole moment (µ) and first hyperpolarizability (β) determined by electric field-induced second harmonic generation, for several merocyanine dyes containing an 1,3,3-trimethylindoline heterocycle as a ‘donor’ in which the ‘acceptor ...
Cavagnero, Silvia +5 more
core +1 more source