Results 11 to 20 of about 679,684 (301)

Palladium-Catalyzed Decarboxylative ortho-Acylation of Anilines with Carbamate as a Removable Directing Group [PDF]

ACS Omega, 2018
Qi-Li Li, Zhong-Yuan Li, Guan-Wu Wang
doaj   +2 more sources

Copper-mediated oxidative C−H/N−H activations with alkynes by removable hydrazides

Beilstein Journal of Organic Chemistry, 2021
The efficient copper-mediated oxidative C–H alkynylation of benzhydrazides was accomplished with terminal alkynes. Thus, a heteroaromatic removable N-2-pyridylhydrazide allowed for domino C–H/N–H functionalization.
Feng Xiong, Bo Li, Chenrui Yang, Liang Zou, Wenbo Ma, Linghui Gu, Ruhuai Mei, Lutz Ackermann   +7 more
doaj   +1 more source

Synthesis of Polysubstituted Ferrocenesulfoxides

Molecules, 2022
The purpose of the study is to design synthetic methodologies, especially directed deprotometalation using polar organometallic reagents, to access polysubstituted ferrocenesulfoxides.
Min Wen, William Erb, Florence Mongin, Yury S. Halauko, Oleg A. Ivashkevich, Vadim E. Matulis, Thierry Roisnel   +6 more
doaj   +1 more source

Imine as a linchpin approach for meta-C–H functionalization

Nature Communications, 2021
Site-selective C–H functionalization still faces some challenges, such as the introduction and removal of an appropriate directing group. Here, the authors introduce a temporary directing group for selective meta-C–H functionalization of 2 ...
Sukdev Bag, Sadhan Jana, Sukumar Pradhan, Suman Bhowmick, Nupur Goswami, Soumya Kumar Sinha, Debabrata Maiti   +6 more
doaj   +1 more source

Set-direct factorizations of groups [PDF]

Journal of Algebra, 2018
referee comments included, 19 ...
Levy, Dan, Maróti, Attila
openaire   +2 more sources

Distal Functionalization via Transition Metal Catalysis

Chemistry Proceedings, 2022
The ubiquitous presence of sp3 C−H bonds in natural feedstock makes them inexpensive, easily accessible, and attractive synthons for the preparation of common and/or complex molecular frameworks in biologically active natural products, pharmaceutics ...
Haibo Ge
doaj   +1 more source

Transition-metal-catalyzed aromatic C–H functionalization assisted by the phosphorus-containing directing groups

Green Synthesis and Catalysis, 2023
Transition-metal-catalyzed C–H bond functionalization has attracted tremendous attention as an increasingly important protocol for the construction of C–C and C–X bonds.
Jian Zhang, Lingyun Yao, Jia-Yi Su, Yang-Zi Liu, Quannan Wang, Wei Ping Deng   +5 more
doaj   +1 more source

First selective direct mono-arylation of piperidines using ruthenium-catalyzed C–H activation [PDF]

, 2013
: A Ru-catalyzed mono-arylation in α-position of saturated cyclic amines is reported employing a C–H activation protocol. Substitution of the pyridine directing group with a bulky group, e.g., trifluoromethyl in the 3-position, proved to be crucial to ...
Karl Kirchner, Maria C. Schwarz, Marko D. Mihovilovic, Michael Schnürch, Navid Dastbaravardeh   +4 more
core   +1 more source

Functional group directed C–H borylation [PDF]

Chem. Soc. Rev., 2014
Different strategies designed to enable directing group effects have been applied to achieve regioselective borylation of C(sp2)–H and C(sp3)–H bonds.
Ros Lao, Abel, Fernández Fernández, Rosario Fátima, Lassaletta Simón, José María   +2 more
openaire   +5 more sources

Selective C(sp2)−H Halogenation of "click" 4-Aryl-1,2,3-triazoles [PDF]

, 2017
Selective bromination reactions of “click compounds” are described. Electron-neutral and electron-deficient arenes selectively undergo unprecedented Pd-catalyzed C–H ortho-halogenations assisted by simple triazoles as modular directing groups, whereas ...
Correa Navarro, Arkaitz, Goitia, Asier, Gómez Bengoa, Enrique   +2 more
core   +2 more sources