Results 1 to 10 of about 12,716 (277)

Arene C–H borylation strategy enabled by a non-classical boron cluster-based electrophile [PDF]

Nature Communications, 2023
Electrophilic borylation of sterically hindered arenes is a challenging transformation. Here, authors report a metal-free electrophilic C–H borylation of hindered arenes using a boron cluster reagent producing valuable aryl boronic esters.
Sangmin Kim, Joseph W. Treacy, Yessica A. Nelson, Jordan A. M. Gonzalez, Milan Gembicky, K. N. Houk, Alexander M. Spokoyny   +6 more
doaj   +2 more sources

Facile Synthesis of NH-Free 5-(Hetero)Aryl-Pyrrole-2-Carboxylates by Catalytic C–H Borylation and Suzuki Coupling [PDF]

Molecules, 2020
A convenient two-step preparation of NH-free 5-aryl-pyrrole-2-carboxylates is described. The synthetic route consists of catalytic borylation of commercially available pyrrole-2-carboxylate ester followed by Suzuki coupling without going through pyrrole ...
Saba Kanwal, Noor-ul- Ann, Saman Fatima, Abdul-Hamid Emwas, Meshari Alazmi, Xin Gao, Maha Ibrar, Rahman Shah Zaib Saleem, Ghayoor Abbas Chotana   +8 more
doaj   +2 more sources

Triazine-based cobalt pincer complex for regioselective C-H borylation of furans [PDF]

Scientific Reports
Selective C-H borylation of heteroarenes is a valuable strategy for accessing organoboron intermediates, with cobalt pincer complexes demonstrating the potential of first-row transition metals as efficient alternatives to precious-metal catalysts.
Dariusz Lewandowski, Grzegorz Hreczycho
doaj   +2 more sources

Organometallic-type reactivity of stable organoboronates for selective (hetero)arene C−H/C-halogen borylation and beyond [PDF]

Nature Communications
Organometallic reagents are essential tools in both academic and industrial laboratories and the polarity separation within the carbon-metal bonds endows them with exceptional reactivities, but also imposes limitations, including air- and moisture ...
Xueting Liu, Daojing Li, Guoao Li, Mengran Wei, Shihao Yuan, Mo Yang, Linke He, Shengda Chen, Zhenxing Li, Liuzhou Gao, Guoqiang Wang, Shuhua Li   +11 more
doaj   +2 more sources

Switchable Magnesium Catalysis: Dehydrogenative Borylation Versus Hydroboration of Terminal Alkynes

ChemistryEurope
Organoboranes are key intermediates in modern synthetic chemistry, yet their preparation often relies on precious metal catalysts and multistep protocols.
Darakshan Parveen, Radhika Shrivas, Ganping Wang, Laurent Maron, Dipak Kumar Roy   +4 more
doaj   +2 more sources

Ligand-enabled C–H borylation of diverse classes of arenes

Tetrahedron Chem, 2022
Here we report a new 6,6′-bipyridine based ligand framework for the iridium-catalysed regioselective ortho borylation of diverse classes of arenes containing different functional groups.
Md Emdadul Hoque, Sayan Dey, Mirja Md Mahamudul Hassan, Jagriti Chaturvedi, Saikat Guria, Jaitri Das, Brindaban Roy, Buddhadeb Chattopadhyay   +7 more
doaj   +1 more source

Alkene Borylation-Hydrogenation Enables Highly Active, Site-Selective Cobalt-Catalyzed Borylation. [PDF]

J Am Chem Soc
Shimozono AM, Roque JB, Li H, Zhang T, Lin R, Chirik PJ.   +5 more
europepmc   +2 more sources

Development of a New Methodology for Dearomative Borylation of Coumarins and Chromenes and Its Applications to Synthesize Boron-Containing Retinoids

Molecules, 2023
Dearomative borylation of coumarins and chromenes via conjugate addition represents a relatively unexplored and challenging task. To address this issue, herein, we report a new and general copper (I) catalyzed dearomative borylation process to synthesize
Bhaskar C. Das, Pratik Yadav, Sasmita Das, Mariko Saito, Todd Evans   +4 more
doaj   +1 more source

Transition metal-free visible light photoredox-catalyzed remote C(sp3)−H borylation enabled by 1,5-hydrogen atom transfer

Communications Chemistry, 2023
The borylation of unreactive carbon-hydrogen bonds is a valuable method for transforming feedstock chemicals into versatile building blocks. Here, we describe a transition metal-free method for the photoredox-catalyzed borylation of unactivated C(sp3)−H ...
Beiqi Sun, Wenke Li, Qianyi Liu, Gaoge Zhang, Fanyang Mo   +4 more
doaj   +1 more source

Photoelectrochemical oxidative C(sp3)−H borylation of unactivated hydrocarbons

Nature Communications, 2023
Organoboron compounds are of high significance in organic synthesis due to the unique versatility of boryl substituents to access further modifications.
Ping-Fu Zhong, Jia-Lin Tu, Yating Zhao, Nan Zhong, Chao Yang, Lin Guo, Wujiong Xia   +6 more
doaj   +1 more source