Results 41 to 50 of about 19,002,772 (320)

N-Benzo[c][1,2,5]thiazol-4-yl-3-trifluoromethylbenzamide

Molbank, 2019
The title compound, N-benzo[c][1,2,5]thiazol-4-yl-3-trifluoromethylbenzamide (1) was synthesized by reacting 3-trifluoromethylbenzoyl chloride (4) and 4-aminobenzo[c][1,2,5]thiadiazole (5). The compound was characterized by various spectroscopic methods (
Hamad H. Al Mamari, Nasser Al Awaimri, Yousuf Al Lawati   +2 more
doaj   +1 more source

Catalytic Undirected Meta‐Selective C–H Borylation of Metallocenes

Advanced Science, 2023
Metallocenes are privileged backbones in the fields of synthetic chemistry, catalysis, polymer science, etc. Direct C–H functionalization is undoubtedly the simplest approach for tuning the properties of metallocenes.
Hao Zheng, Chang‐Hui Liu, Xiao‐Yu Wang, Yan Liu, Bing‐Zhi Chen, Yan‐Cheng Hu, Qing‐An Chen   +6 more
doaj   +1 more source

Transient Directing Group enabled C3-(sp2)-H alkenylation of Five Membered Heterocyclic Aldehydes: An Easy Access to Mechanochromic Luminogens

, 2023
The palladium (II) catalyzed direct C3-(sp2)-H alkenylation of five membered heterocyclic aldehydes has been developed using 3-aminobutanoic acid as a catalytic transient directing group.
Javed Y., Shaikh, Anindita , Bhowmick, Abhijit, Chatterjee, Nitin A, Thombare, Dr. Ramakrishna G., Bhat   +4 more
core   +1 more source

Directing-Group-Assisted Non-Strained Ether C–O Bond Homolysis Mediated by Low-Valent Titanium

Ether C–O bonds are typical constituents of organic molecules that are seldom regarded as reactive functional groups except when highly strained. With the assistance of appropriate directing groups, low-valent titanium was found to homolytically cleave ...
Yutaka Ukaji (1589830), Takuya Suga (2234581), Ryusei Takada (12624728), Masaya Sakamoto (295814)   +3 more
core   +3 more sources

Copper Catalyzed C–H Sulfonylation of Benzylamines with a Catalytic Transient Directing Group

, 2023
Transient CH functionalization involves the dynamic in situ generation of a directing group to allow directed C–H activation/cyclometallation and subsequent functionalization steps.
Joe I., Higham, Tsz-Kan, Ma, James A., Bull   +2 more
core   +1 more source

Rhodium(III)-Catalyzed C-H Alkenylation/Directing Group Migration for the Regio- and Stereoselective Synthesis of Tetrasubstituted Alkenes.

Organic Letters, 2020
An efficient Rh(III)-catalyzed C-H alkenylation/directing group migration cascade between indoles and alkynes for the assembly of tetrasubstituted alkenes is reported.
Xiaowei Wu, Yangbin Lu, Jin Qiao, Wenhao Dai, Xiuwen Jia, Hangcheng Ni, Xiaoning Zhang, Hong Liu, Fei Zhao   +8 more
semanticscholar   +1 more source

Deciphering the Mechanistic Insights of Temporary Directing-Group-Assisted meta-Alkenylation of Complex Biaryl Systems

, 2023
The recently developed palladium-catalyzed C(sp2)–H olefination of 2-arylbenzaldehyde with the aid of a temporary directing group (TDG) via reversible imine formation delivers selective meta-C–H functionalization and possesses significant advantages over
Puneet Gupta (4860106), Nupur Goswami (11979447), Nikunj Kumar (16792478), Debabrata Maiti (1401568), Sukdev Bag (1525246)   +4 more
core   +3 more sources

Directing-Group-Based Strategy Enabling Intermolecular Heck-Type Reaction of Cycloketone Oxime Esters and Unactivated Alkenes

, 2020
A new type of coupling between unactivated olefins and nonstabilized alkyl radicals was achieved, which enabled the first intermolecular Heck-type reaction of cycloketone oxime esters and unactivated alkenes.
Gui-Juan Cheng (1855090), Junkai Fu (1725067), Xuexiang Li (128859), Yi Deng (421971), Chunyang Zhao (7582538), Hongwei Wang (151141), Yu Zhou (89766)   +6 more
core   +1 more source

Directing-Group-Controlled Ring-Opening Addition and Hydroarylation of Oxa/azabenzonorbornadienes with Arenes via C–H Activation

, 2020
An efficient method for the directing group controlled rhodium-catalyzed addition reaction of oxa/azabicylic alkenes with aromatic ketones and benzoic acids has been developed.
Keyang Zhang (8071334), Jingchao Chen (1533052), Youxian Tian (8728656), Ruhima Khan (3907939), Yongyun Zhou (1533058), Kangkui Li (8071331), Baomin Fan (1490236), Xuexin Zhang (5859530), Yang Gao (18005)   +8 more
core   +1 more source

Direct Regioselective C-H Cyanation of Purines

Molecules, 2023
A direct regioselective C-H cyanation of purines was developed through a sequential triflic anhydride activation, nucleophilic cyanation with TMSCN, followed by a process of base-mediated elimination of triflous acid (CF3SO2H).
Luyong Li, Jie Hu, Yuqing Fu, Xiaolin Shi, Hongguang Du, Jiaxi Xu, Ning Chen   +6 more
doaj   +1 more source