Results 41 to 50 of about 12,716 (277)
Molecules, 2022 Herein, we report the use of the Suzuki–Miyaura cross-coupling reaction for the preparation of a library of synthetic derivatives of flavonoids for biological activity assays.
Martina Hurtová +5 more
doaj +1 more source
Iterative Synthesis of Pentacene Derivatives with Continuous Boron–Oxygen Bonds
Angewandte Chemie, EarlyView.An iterative synthetic strategy enables the controlled introduction of continuous multiple B–O bonds at the zigzag edge of acenes. A simple two‐step cycle—ipso iodination and Suzuki cross‐coupling/condensation—efficiently constructs BO‐acenes ranging from naphthalene to pentacene.
Seonghwa Jeong +8 more
wiley +2 more sources
Iridium-Catalyzed, Silyl-Directed, peri -Borylation of C−H Bonds in Fused Polycyclic Arenes and Heteroarenes [PDF]
, 2018 peri-Disubstituted naphthalenes exhibit interesting physical properties and unique chemical reactivity, due to the parallel arrangement of the bonds to the two peri-disposed substituents.
Hartwig, John F, Su, Bo
core +1 more source
Intermolecular Electrophilic Germylation Using GeCl4 and Al2Cl6
Angewandte Chemie, EarlyView.While electrophilic aromatic substitution is well‐established for carbon and silicon‐based electrophiles, it is extremely underdeveloped for germanium. Herein we report the first effective intermolecular Germa–Friedel–Crafts reaction. The process can be modified to enable selective synthesis of the mono‐ or the di‐aryl germane derivatives, ArGeCl3 and ...
Justyna Łosiewicz +4 more
wiley +2 more sources
Full chirality transfer in the synthesis of hindered tertiary boronic esters under in situ lithiation–borylation conditions [PDF]
, 2016 Using non-cryogenic lithiation–borylation, sterically hindered tertiary neopentyl glycol boronic esters can be prepared from secondary benzylic carbamates with full chirality transfer.
Aggarwal, Varinder +5 more
core +2 more sources
Iridium/N-heterocyclic carbene-catalyzed C–H borylation of arenes by diisopropylaminoborane
Beilstein Journal of Organic Chemistry, 2016 Catalytic C–H borylation of arenes has been widely used in organic synthesis because it allows the introduction of a versatile boron functionality directly onto simple, unfunctionalized arenes.
Mamoru Tobisu +2 more
doaj +1 more source
Iron-Catalysed C(sp2)-H Borylation Enabled by Carboxylate Activation
Molecules, 2020 Arene C(sp2)-H bond borylation reactions provide rapid and efficient routes to synthetically versatile boronic esters. While iridium catalysts are well established for this reaction, the discovery and development of methods using Earth-abundant ...
Luke Britton +3 more
doaj +1 more source
Molecules, 2004 The palladium catalyzed borylation of a Boc protected aminobromoquinoline compound with bis(pinacolato)diboron yielded a biaryl compound, resulting from cross coupling, as the major product, instead of the intended boronate, even though no strong base ...
Binghe Wang, Jun Yan, Hao Fang
doaj +1 more source
Rhodium-catalyzed dehydrogenative borylation of cyclic alkenes [PDF]
, 2009 A rhodium-catalyzed dehydrogenative borylation of cyclic alkenes is described. This reaction provides direct access to cyclic 1-alkenylboronic acid pinacol esters, useful intermediates in organic synthesis.
Azusa Kondoh +23 more
core +1 more source
Short Convergent Synthesis of the Mycolactone Core Through Lithiation-Borylation Homologations [PDF]
, 2015 : Using iterative lithiation-borylation homologations, the mycolactone toxin core has been synthesized in 13 steps and 17 %o verall yield. The rapid build-up of molecular complexity,h igh convergencea nd high stereoselectivitya re noteworthy features of ...
Aggarwal, Varinder K. +1 more
core +2 more sources