Results 41 to 50 of about 2,786 (190)

Cu-Catalyzed Decarboxylative Borylation [PDF]

ACS Catalysis, 2018
A simple method for the conversion of carboxylic acids to boronic esters via redox-active esters (RAEs) is reported using copper catalysis. The scope of this transformation is broad, and compared with the known protocols available, it represents the most inexpensive, rapid, and operationally simple option. In addition to a full exploration of the scope,
Jie Wang, Ming Shang, Helena Lundberg, Karla S. Feu, Scott J. Hecker, Tian Qin, Donna G. Blackmond, Phil S. Baran   +7 more
openaire   +2 more sources

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

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   +1 more source

Dehydroborylation of Terminal Alkynes Using Lithium Aminoborohydrides

Molecules, 2023
Dehydrogenative borylation of terminal alkynes has recently emerged as an atom-economical one-step alternative to traditional alkyne borylation methodologies.
P. Veeraraghavan Ramachandran, Henry J. Hamann   +1 more
doaj   +1 more source

Direct borylation of terrylene and quaterrylene

Beilstein Journal of Organic Chemistry, 2020
The preparation of large rylenes often needs the use of solubilizing groups along the rylene backbone, and all the substituents of the terrylenes and quaterrylenes were introduced before creating the rylene skeleton.
Haruka Kano, Keiji Uehara, Kyohei Matsuo, Hironobu Hayashi, Hiroko Yamada, Naoki Aratani   +5 more
doaj   +1 more source

Electrochemical Borylation of C−C and C−Het Bonds

ChemElectroChem
Recently, electrochemical methods have been harnessed as a transition metal‐free strategy for borylation reactions in the synthesis of organoboron compounds.
Tsoh Lam Cheung, Hairong Lyu
doaj   +1 more source

Palladium-catalyzed borylation of aryl (pseudo)halides and its applications in biaryl synthesis

Chemistry Central Journal, 2018
A facile and efficient palladium-catalyzed borylation of aryl (pseudo)halides at room temperature has been developed. Arylboronic esters were expeditiously assembled in good yields and with a broad substrate scope and good functional group compatibility.
Hong Ji, Jianghong Cai, Nana Gan, Zhaohua Wang, Liyang Wu, Guorong Li, Tao Yi   +6 more
doaj   +1 more source

Photoinduced Deaminative Borylation of Alkylamines [PDF]

Journal of the American Chemical Society, 2018
An operationally simple deaminative borylation reaction of primary alkylamines has been developed. The formation of electron-donor-acceptor complexes between N-alkylpyridinium salts and bis(catecholato)diboron enables photoinduced single-electron transfer and fragmentation to carbon-centered radicals, which are subsequently borylated.
Jingjing Wu, Lin He, Adam Noble, Varinder K. Aggarwal   +3 more
openaire   +4 more sources

Late‐Stage Functionalization of Peptides on the Solid Phase

Angewandte Chemie International Edition, EarlyView.
Peptide modifications are essential to control pharmacodynamic and pharmacokinetic properties of peptide drugs. Consequently, strategies that allow for efficient and rapid incorporation of non‐canonical modifications into peptides in parallel formats are highly sought after.
Marius Werner, Truc Lam Pham, Franziska Thomas   +2 more
wiley   +1 more source

Pyridine-promoted dediazoniation of aryldiazonium tetrafluoroborates: Application to the synthesis of SF5-substituted phenylboronic esters and iodobenzenes

Beilstein Journal of Organic Chemistry, 2015
Pyridine promotes dediazoniation of aryldiazonium tetrafluoroborates. The formed aryl radicals were trapped with B2pin2, iodine, or tetrahydrofuran to afford boronic esters, iodobenzenes and benzenes, respectively.
George Iakobson, Junyi Du, Alexandra M. Z. Slawin, Petr Beier   +3 more
doaj   +1 more source

Do we really need ligands in Ir-catalyzed C–H borylation?

CHIMIA
Direct borylation of C–H bonds is a privileged strategy to access versatile building blocks and valuable derivatives of complex molecules (late-stage functionalization, metabolite synthesis).
Janis M. Zakis, Simone L. Kuhn, Joanna Wencel-Delord, Tomas Smejkal   +3 more
doaj   +1 more source