Results 41 to 50 of about 6,583 (223)

1,2‐Bis(boronate) Arenes by Borylation Directed Borylation

Angewandte Chemie, EarlyView.
Boron electrophiles derived from tetrabromo‐pyrazaboles and AlCl3 affect the regioselective vicinal double C–H borylation of a range of arenes and polycyclic aromatic hydrocarbons (PAHs). A subsequent pinacol installation step then affords the vicinal bis‐boronate ester‐substituted arene/PAH.
Anna V. Schellbach, Mathew J. Cross, Emily Noone, Cate S. Anstöter, Michael J. Ingleson   +4 more
wiley   +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, Takuya Igarashi, Naoto Chatani   +2 more
doaj   +1 more source

An X‑Shaped Chiral Non‑Fullerene n‐Type Semiconductor: Application in Perovskite Solar Cells and Chirality‑Induced Spin Selectivity

Angewandte Chemie, EarlyView.
A highly electron‑accepting derivative of cyclobisbiphenylenecarbonyl (CBBC‐TIC) is reported. CBBC‐TIC functions as an electron‐transport layer for perovskite solar cells, achieving a power conversion efficiency of 20.6%. Furthermore, the enantiomers of CBBC‐TIC exhibited spin‐selective electron transport with high enantiospecific magnetic conductance ...
Yuki Sakamoto, Koki Otsuka, Kuraudo Ishihara, Shuang Li, Ai Shimazaki, Megumi Haramatsu, Junichiro Hirano, Juntaro Nogami, Hiroshi Shinokubo, Hiroki Uratani, Hironori Kaji, Fumitaka Ishiwari, Akinori Saeki, Tomoya Nakamura, Atsushi Wakamiya, Norihito Fukui   +15 more
wiley   +2 more sources

Palladium-catalyzed solid-state borylation of aryl halides using mechanochemistry

Beilstein Journal of Organic Chemistry, 2022
This study describes the solid-state palladium-catalyzed cross-coupling between aryl halides and bis(pinacolato)diboron using ball milling. The reactions were completed within 10 min for most aryl halides to afford a variety of synthetically useful ...
Koji Kubota, Emiru Baba, Tamae Seo, Tatsuo Ishiyama, Hajime Ito   +4 more
doaj   +1 more source

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

Fluorene‐Framework Engineering Enables Narrowband Red Multi‐Resonance Emitters for High‐Efficiency With Negligible Roll‐Off Toward BT.2020

Angewandte Chemie, EarlyView.
σ‐Decoupled C9 fluorene‐framework topology control enables narrowband red MR emitters. SF‐BNO and PF‐BNO share the same BNO core, but differ in closed/open fluorene ring closure. SF‐BNO improves steric shielding and stability, while PF‐BNO enhances PLQY, orientation, and efficiency. Ex‐PSF and TE‐OLED architectures deliver ultra‐low efficiency roll‐off
Aradhya Rajput, Nisha Vergineya S, Subramanian Muruganantham, Meghana Tirupati, Odugu Pavan Kumar, Jun‐Yun Kim, Mi Young Chae, Jang Hyuk Kwon   +7 more
wiley   +2 more sources

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

Radical C‒N Borylation of Aromatic Amines Enabled by a Pyrylium Reagent [PDF]

, 2019
Herein, we report a radical borylation of aromatic amines through a homolytic C(sp2)‒N bond cleavage. This method capitalizes on a simple and mild activation via a pyrylium reagent (ScPyry-OTf) thus priming the amino group for reactivity. The combination
Yue, Pang, Markus, Leutzsch, Yuanhong, Ma, Josep, Cornella, jan, niski   +4 more
core   +2 more sources

2-Aminophenanthrolines Enable the Mild, Undirected Borylation of Alkyl C–H Bonds [PDF]

, 2023
The catalytic, undirected borylation of alkyl C–H bonds typically occurs at high reaction temperatures or with excess substrate, or both, because of the low reactivity of alkyl C–H bonds.
John, Hartwig, Nanrun , Cheng, Ángel, Hernandez-Mejías, Kyan , D\u27Angelo, Isaac, Yu   +4 more
core   +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