Results 1 to 10 of about 205,119 (136)

Metal-free photoanodes for C–H functionalization [PDF]

Nature Communications, 2023
Organic semiconductors, such as carbon nitride, when employed as powders, show attractive photocatalytic properties, but their photoelectrochemical performance suffers from low charge transport capability, charge carrier recombination, and self-oxidation.
Junfang Zhang, Yuntao Zhu, Christian Njel, Yuxin Liu, Pietro Dallabernardina, Molly M. Stevens, Peter H. Seeberger, Oleksandr Savateev, Felix F. Loeffler   +8 more
doaj   +2 more sources

N,N- and N,O-Bidentate-Chelation-Assisted Alkenyl C–H Functionalization [PDF]

Molecules
Chelation-assisted olefinic C–H functionalization has been demonstrated to be a powerful method of constructing multi-substituted alkenes from simpler ones.
Yawei Zhang, Chengxing Peng, Xiaoli Li, Xiuying Liu, Liyuan Ding, Guofu Zhong, Jian Zhang   +6 more
doaj   +2 more sources

Tuning Benzylic C−H Functionalization of (Thio)xanthenes with Electrochemistry [PDF]

Molecules, 2023
Here, we report a tunable electrochemical benzylic C−H functionalization of (thio)xanthenes with terminal alkynes and nitriles in the absence of any catalyst or external chemical oxidant.
Changji Wang, Na Yang, Chao Li, Jian He, Hongji Li   +4 more
doaj   +2 more sources

Selective ring expansion and C−H functionalization of azulenes [PDF]

Nature Communications, 2023
We report a transition metal-catalyzed ring expansion of azulene that can be contrasted with C–H functionalization. This study represents the first example of the successful ring expansion of azulene using Cu(hfacac)2 (hfacac: hexafluoroacetylacetonate ...
Sangjune Park, Cheol-Eui Kim, Jinhoon Jeong, Ho Ryu, Chanyoung Maeng, Dongwook Kim, Mu-Hyun Baik, Phil Ho Lee   +7 more
doaj   +2 more sources

Iron-catalyzed aliphatic C–H functionalization to construct carbon–carbon bonds [PDF]

Nature Communications
Although cytochrome P450 enzymes are powerful catalysts for hydrogen-atom abstraction from alkanes by iron-oxo species, the process typically leads to oxygenated products due to ultrafast oxygen rebound.
Lulu Zhou, Hengrui Cai, Dong Xie, Kangkang Sun, Shanmei Zhu, Mengying Guo, Wei Han   +6 more
doaj   +2 more sources

Nickel(II)/Salox-Catalyzed Enantioselective C–H Functionalization [PDF]

ACS Central Science
Jia-Hao Chen, Qi-Jun Yao, Ming-Yu Zhong, Tian-Yu Jiang, Fan-Rui Huang, Xiang Li, Bing-Feng Shi   +6 more
doaj   +2 more sources

Photoredox catalysis in nickel-catalyzed C–H functionalization

Beilstein Journal of Organic Chemistry, 2021
Catalytic C‒H functionalization has become a powerful strategy in organic synthesis due to the improved atom-, step- and resource economy in comparison with cross-coupling or classical organic functional group transformations.
Lusina Mantry, Rajaram Maayuri, Vikash Kumar, Parthasarathy Gandeepan   +3 more
doaj   +1 more source

DABCO-promoted photocatalytic C–H functionalization of aldehydes

Beilstein Journal of Organic Chemistry, 2021
Herein we present a direct application of DABCO, an inexpensive and broadly accessible organic base, as a hydrogen atom transfer (HAT) abstractor in a photocatalytic strategy for aldehyde C–H activation.
Bruno Maia da Silva Santos, Mariana dos Santos Dupim, Cauê Paula de Souza, Thiago Messias Cardozo, Fernanda Gadini Finelli   +4 more
doaj   +1 more source

Functionalization of Porphyrins Using Metal-Catalyzed C–H Activation

Inorganics, 2022
The review is devoted to the C–H functionalization of porphyrins. Porphyrins exhibit the properties of organic semiconductors, light energy converters, chemical and electrochemical catalysts, and photocatalysts.
Aleksey N. Kiselev, Sergey A. Syrbu, Natalia Sh. Lebedeva, Yury A. Gubarev   +3 more
doaj   +1 more source

Recent Advances in C–H Functionalization of Pyrenes

Chemistry, 2023
In recent years, transition metal-catalyzed C–H activation and site-selective functionalization have been considered to be valuable synthetic tactics to functionalize organic compounds containing multiple C–H bonds.
Srinivasarao Arulananda Babu, Arup Dalal, Subhankar Bodak   +2 more
doaj   +1 more source