Results 31 to 40 of about 2,786 (190)

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, Takuya Igarashi, Naoto Chatani   +2 more
doaj   +1 more source

Synthesis of Highly Borylated 2‑Boraindanes through Multiple Borylation of Diynes. [PDF]

JACS Au
Boraindanes, composed of aromatic two-dimensional (2D) benzene and saturated three-dimensional (3D) boracycle moieties, are considered promising candidates for bioactive compounds/probes, agents for boron neutron capture therapy, and functional materials, as they combine the photophysical properties of the 2D aromatic and the high molecular recognition
Nagashima Y, Suzuki M, Komaki T, Araujo Dias AJ, Tanaka K, Uchiyama M.   +5 more
europepmc   +4 more sources

Coordination‐Driven Direct C─H Metalation of N‐Heterocycles With a Superbasic Co(II) Amide Co(TMP)2

Angewandte Chemie, EarlyView.
By enabling regioselectivities that are inaccessible with conventional bases, this study introduces a Co(II) amide platform for the deprotonative C─H metalation of sensitive N‐heterocycles. Subsequent interception of the resulting Co(II) intermediates with external oxidants affords a family of sterically congested, TMP‐substituted heterocycles via C─N ...
Na Jin, Manting Mu, Max García‐Melchor, Eva Hevia   +3 more
wiley   +2 more sources

Biaryl Product Formation from Cross-coupling in Palladiumcatalyzed Borylation of a Boc Protected Aminobromoquinoline Compound

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

Three Component Thio‐ and Carboboration of Alkynes: A Modular Route to Functionalised Bicyclic Boronates

Angewandte Chemie, EarlyView.
Three‐component thio‐ and carbo‐boration reactions to form functionalised benzoxaborinines and benzazaborinines are reported. The nucleophile scope includes thioethers, thiols, and (hetero)arenes. Mechanistic studies revealed a disparity between thioboration using thioethers and using thiols.
Laura Winfrey, Gary S. Nichol, Stephen P. Thomas, Dominic R. Willcox, Michael. J. Ingleson   +4 more
wiley   +2 more sources

Dialkylboryl-Substituted Cyclic Disilenes Synthesized by Desilylation-Borylation of Trimethylsilyl-Substituted Disilenes

Molecules, 2021
π-Electron systems of silicon have attracted attention because of their narrow HOMO-LUMO gap and high reactivity, but the structural diversity remains limited.
Kaho Tanaka, Naohiko Akasaka, Tomoyuki Kosai, Shunya Honda, Yuya Ushijima, Shintaro Ishida, Takeaki Iwamoto   +6 more
doaj   +1 more source

Ir-Catalyzed ortho-C-H Borylation of Aromatic C(sp²)-H Bonds of Carbocyclic Compounds Assisted by N-Bearing Directing Groups

Reactions
C-H borylation is a powerful strategy for the construction of C-B bonds due to the synthetic versatility of C-B bonds. Various transition metals affect the powerful functionalization of C-H bonds, of which Ir is the most common.
Hamad H. Al Mamari
doaj   +1 more source

α,β-Enone Borylation by Bis(Pinacolato)Diboron Catalyzed by Cu₃(BTC)₂ Using Cesium Carbonate as a Base

Nanomaterials, 2021
Cu3(BTC)2 (BTC: 1,3,5-benzenetricarboxylate) as a heterogeneous catalyst in the presence of cesium carbonate as a base is reported for the borylation of α,β-conjugated enones by bis(pinacolato)diboron (B2pin2).
Amarajothi Dhakshinamoorthy, Mercedes Alvaro, Abdullah M. Asiri, Hermenegildo Garcia   +3 more
doaj   +1 more source

Atroposelective Access to π‐Conjugated 1,2‐Azaborepines Enabled by Palladium‐Catalyzed Cyclization of N‐Heterobiaryls with Alkynylboronates

Advanced Science, EarlyView.
We report a palladium‐catalyzed atroposelective cyclization of N‐heterobiaryl triflates with alkynyl boronates to access seven‐membered 1,2‐BN‐bridged biaryls with high yields and excellent enantioselectivity via a cascade DyKAT, cis‐carbopalladation, and 1,2‐migration, which expands the toolbox for axially chiral π‐conjugated boron compounds and opens
Fengya He, Zhen Wang, Haoyu Guo, Shuguang Chen, Xu Zhang, Yongjia Shang, Hui Wang   +6 more
wiley   +1 more source

Photoinduced Site-Selective Aryl C-H Borylation with Electron-Donor-Acceptor Complex Derived from B₂Pin₂ and Isoquinoline

Molecules
Due to boron’s metalloid properties, aromatic boron reagents are prevalent synthetic intermediates. The direct borylation of aryl C-H bonds for producing aromatic boron compounds offers an appealing, one-step solution.
Manhong Li, Yi-Hui Deng, Qianqian Chang, Jinyuan Li, Chao Wang, Leifeng Wang, Tian-Yu Sun   +6 more
doaj   +1 more source