Results 11 to 20 of about 15,108 (284)
, 2023 Catalytic borylations of sp3 C-H bonds occur with high selectivities for primary C-H bonds or secondary C-H bonds that are activated by nearby electron-withdrawing substituents. Catalytic borylation at tertiary C-H bonds has not been observed.
Pashenko, Alexander +17 more
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1,2-Disubstituted Bicyclo[2.1.1]hexanes as Bioisosteres of the ortho-substituted Benzene
, 2023 1,2-Disubstitued bicyclo[2.1.1]hexanes have been designed, synthesized, and validated as a new generation of saturated bioisosteres of ortho-substituted benzenes. Incorporation of the bicyclo[2.1.1]hexane core into the structure of agrochemicals Boskalid
Iryna , Sadkova +8 more
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Bicyclo[2.1.1]hexanes by Visible Light-Driven Intramolecular Crossed [2 + 2] Photocycloadditions
, 2022 Bicyclo[2.2.1]hexanes have become increasingly popular building blocks in medicinal chemistry as bridged scaffolds that provide unexplored chemical space.
Thorsten Bach (1397326) +1 more
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, 2023 1,5-Disubstituted bicyclo[2.1.1]hexanes are bridged scaffolds with well-defined exit vectors that are becoming increasingly popular building blocks in medicinal chemistry since they are saturated bioisosteres of orthosubstituted phenyl rings.
Israel , Fernandez +6 more
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Development of the Lewis Acid Catalyzed Allenoate-Claisen Rearrangement. Investigations of Enantioselective Catalysis of the Allenoate-Claisen Rearrangement. Studies Towards the Total Synthesis of Erythrolide E [PDF]
, 2004 The development of a new Lewis acid catalyzed sigmatropic reaction is described. This process, termed the allenoate-Claisen rearrangement, involves the metal-catalyzed condensation of an allenic ester with a tertiary allylic amine.
Lambert, Tristan Hayes
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Molecules, 2011 The present study reports the Gas Chromatography-Mass Spectrometry (GC-MS) evaluation of the hexanes and dichloromethane fractions from extracts of the red alga Centroceras clavulatum (C. Agardh) Montagne. Twenty three compounds were identified, totaling
Hosana M. Debonsi +8 more
doaj +1 more source
Spirocyclic Acylphloroglucinol Derivatives from
Natural Product Communications, 2014 Five spirocyclic acylphloroglucinol derivatives ( 1–5 ) have been isolated from a hexanes extract of the leaves of Hypericum pyramidatum. Pyramidatones A-D ( 1–3, 5 ) are new, and chipericumin C ( 4 ) has been previously reported. The acylphloroglucinols
Rebecca Force +6 more
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Dual function of active constituents from bark of Ficus racemosa L in wound healing
BMC Complementary and Alternative Medicine, 2018 Background Different parts including the latex of Ficus racemosa L. has been used as a medicine for wound healing in the Ayurveda and in the indigenous system of medicine in Sri Lanka.
Nisansala Swarnamali Bopage +5 more
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Beilstein Journal of Organic Chemistry, 2022 A reliable method for the synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexanes through the 1,3-dipolar cycloaddition (1,3-DC) reactions of cyclopropenes to the stable azomethine ylide – protonated form of Ruhemann's purple (PRP) has ...
Alexander S. Filatov +4 more
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Crystal structure of bis(3-bromomesityl)(quinolin-1-ium-8-yl)boron(III) tribromide
Acta Crystallographica Section E: Crystallographic Communications, 2015 The title compound, C27H26.82BBr2.18N+·Br3−, is a cationic triarylborane isolated as its tribromide salt. The aryl substituents include a protonated 8-quinolyl group and two 3-bromomesityl groups.
Jungho Son +2 more
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