Results 61 to 70 of about 17,602 (278)
(1H-Benzo[d][1,2,3]triazol-1-yl)(5-bromo-1-hydroxy-1H-indol-3-yl)methanone
Molbank, 2014 The title compound was easily prepared by a nitrosoarene-alkyne cycloaddition reaction carried out in toluene at 80 °C. The product is a highly functionalized compound that can be further derivatized through various functional group interconversion ...
Francesco Tibiletti +5 more
doaj +1 more source
Practical synthesis of isocoumarins via Rh(III)-catalyzed C–H activation/annulation cascade
Beilstein Journal of Organic Chemistry, 2023 Herein, we report an unprecedented Rh(III)-catalyzed C–H activation/annulation cascade of readily available enaminones with iodonium ylides towards the convenient synthesis of isocoumarins.
Qian-Ci Gao +3 more
doaj +1 more source
Efficient Intersystem Crossing in Extended Helical Perylene Diimide Dimers with Chalcogen-Annulation
The properties and formation mechanisms of the triplet state have been widely investigated since they are crucial intermediates in photo functional devices. Specifically, helical PDI dimers, horizontal expanded π-conjugated derivatives of PDI, have shown
Shaoqian Peng (12542380) +7 more
core +1 more source
β-Iodoallenolates as Springboards for Annulation Reactions
, 2016 β-Iodoallenolates II, generated from alkynones I with tetra-n-butylammonium iodide and a Lewis acid, underwent selective single or double annulation, depending on the Lewis acid promoter.
Jennifer Ciesielski (1903027) +2 more
core +2 more sources
Regiocontrolled Annulation of Benzocyclobutenols with Alkynes
, 2022 A tandem reaction that involves an unprecedented Rh-catalyzed intramolecular annulation of benzocyclobutenols with alkynes and subsequent ZnCl2-promoted dehydration was developed, offering an efficient approach to 2H-furan-, pyran-, and oxepine-fused ...
Ping Hu (59156) +11 more
core +1 more source
Radical reactions of xanthates: annulation of the cyclopentene ring [PDF]
Journal of the Serbian Chemical Society, 2007 Homoallylic radicals, generated from the corresponding xanthates, react with terminal alkynes to give cyclopentene derivatives in moderate yields.
AHMED MOHAMED ELHESHI +2 more
doaj
Rhodium-Catalyzed [3 + 2] Annulation of Indoles
, 2016 Rhodium-Catalyzed [3 + 2] Annulation of ...
Yajing Lian (1295673) +1 more
core +2 more sources
A Reversible 900 nm Near‐Infrared Photoswitch for Invisibly Writable 2D and 3D Displays
Angewandte Chemie International Edition, EarlyView.The peri‐benzo[a]fluoranthenethioindigo (PBFT) photoswitch enables direct excitation with near‐infrared light up to 900 nm wavelengths. It delivers a high‐performance property profile including high‐contrast color changes between bright green and deep blue.
Elias Ciekalski, Henry Dube
wiley +1 more source
CONTRAT D'INTEGRATION / Annulation / Effets
, 1975 Chesne Guy. CONTRAT D'INTEGRATION / Annulation / Effets. In: Études et dossiers (Institut d'études judiciaires de Rennes), Tome 4, 1975-1. pp.
Chesne, Guy
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, 2021 An efficacious method in which BINOL-type chiral imidodiphosphoric acid catalyzed the asymmetric [5 + 1] annulation reaction of 2-pyrrolylphenol with 1-methylindoline-2,3-dione was established.
Liangyu Zheng +17 more
core +1 more source