Results 61 to 70 of about 92,195 (127)

Combined Gold and Photoredox Catalysis: Synthesis of 3-Alkenyl-2H-Indazoles from 2-Alkynylazobenzenes [PDF]

We disclose the intramolecular synthesis of 3- alkenyl-2H-indazoles from 2-alkynylazobenzenes, promoted by a dual catalysis using AuCl3 and a ruthenium photocatalyst under visible light irradiation.
Mañas Hernández, Clara, Merino Marcos, Estíbaliz   +1 more
core   +1 more source

Synthesis of Indazoles via N–N Bond-Forming Oxidative Cyclization from 2‑Aminomethyl-phenylamines

Herein we report a method for the synthesis of indazoles from readily available 2-aminomethyl-phenylamines via N–N bond-forming oxidative cyclization. Inspired by indazole formation initially observed as a side product by N. Coskun et al.
Jale Karolyi-Oezguer (3346655), Jacqueline Bitai (6251411), David Covini (2537638), Christian Dank (6388697), Andreas Gollner (2191369), Anna Schoeggl Toledano (17903794), Helmut Berger (6388694)   +6 more
core   +1 more source

Visible-Light Photocatalyzed C3–H Alkylation of 2H‑Indazoles/Indoles with Sulfoxonium Ylides via Diversified Mechanistic Pathways

Herein, the C3–H alkylation of 2H-indazoles and indoles with sulfoxonium ylides is developed under visible-light photocatalysis. This protocol employs easily accessible reagents, and a wide range of 2H-indazoles, indoles, and sulfoxonium ylides are ...
Yuzhu Peng (728099), Yujing Wang (1993366), Qing Sun (492552), Kaifeng Wang (4990376), Xiaoguang Bao (1470508)   +4 more
core   +1 more source

Visible-Light-Induced Regioselective Cross-Dehydrogenative Coupling of 2H‑Indazoles with Ethers

, 2019
A visible-light-promoted regioselective C­(sp2)–H/C­(sp3)–H cross-dehydrogenative coupling between 2H-indazoles and ethers has been achieved using a catalytic amount of rose bengal as an organophotoredox-catalyst and tert-butyl hydroperoxide (TBHP) as an
Sudip Laru, Sudip Laru (6503099), Alakananda Hajra, Alakananda Hajra (1600114), Mukta Singsardar, Susmita Mondal, Mukta Singsardar (3136626), Susmita Mondal (174649)   +7 more
core   +1 more source

Bi(OTf)₃-Catalyzed Intramolecular Amination of Triazenylaryl Allylic Alcohols: A Stereoselective, High-Yield Synthesis of (E)-3-Alkenyl 2H-indazoles

, 2014
An efficient Bi(OTf)3-catalyzed synthesis of 3-alkenyl-2-pyrrolidine-2H-indazoles from triazenylaryl allylic alcohols via the intramolecular direct amination process is reported. Compared with the dodecyl benzenesulfonic acid (DBSA)-catalyzed method, the
Xin Xu (11989), Weijun Yang (560411), Lili Zhang (120447), Lijun Xu (195394), Maozhong Miao (560413), Hongjun Ren (560414), Zhigen Yang (560412)   +6 more
core   +1 more source

Regiodivergent Cu-Promoted, AcOH-Switchable Distal Versus Proximal Direct Cyanation of 1‑Aryl‑1H‑indazoles and 2‑Aryl‑2H‑indazoles via Aerobic Oxidative C–H Bond Activation

A copper-promoted regiodivergent, AcOH-switchable, distal and proximal direct cyanation of N-aryl-(1H/2H)-indazoles via aerobic oxidative C­(sp2)–H bond activation has been developed.
Sandeep Chaudhary (1508257), Richa Sharma (768608)   +1 more
core   +1 more source

Inhibition of myeloperoxidase: evaluation of 2H-indazoles and 1H-indazolones. [PDF]

Bioorg Med Chem, 2014
Roth A, Ott S, Farber KM, Palazzo TA, Conrad WE, Haddadin MJ, Tantillo DJ, Cross CE, Eiserich JP, Kurth MJ.   +9 more
europepmc   +1 more source

Synthesis of some novel 2H-indazoles - by Mohammad Hassan Dakdouki

, 2004
Thesis (M.S.)--Dept. of Chemistry, AUB, 2004.;"Advisor: Dr. Makhlouf Haddadin, Professor, Chemistry--Member of Committee: Dr. Kamal Bouhadir, Assistant Professor, Chemistry--Member of Committee: Dr.
Dakdouki, Mohammad Hassan
core  

Oxidative cross-dehydrogenative coupling (CDC) via C_(sp²)-H bond functionalization: tert-butyl peroxybenzoate (TBPB)-promoted regioselective direct C-3 acylation/benzoylation of 2H-indazoles with aldehydes/benzyl alcohols/styrenes. [PDF]

RSC Adv, 2021
Sharma R, Yadav L, Yadav RK, Chaudhary S.   +3 more
europepmc   +1 more source

Accessing Multiple Classes of 2 H-Indazoles: Mechanistic Implications for the Cadogan and Davis-Beirut Reactions. [PDF]

J Am Chem Soc, 2019
Zhu JS, Li CJ, Tsui KY, Kraemer N, Son JH, Haddadin MJ, Tantillo DJ, Kurth MJ.   +7 more
europepmc   +1 more source