Results 221 to 230 of about 147,295 (272)

C-Alkylation of Ketones and Related Compounds by Alcohols: Transition-Metal-Catalyzed Dehydrogenation.

Angewandte Chemie, 2016
Transition-metal-catalyzed C-alkylation of ketones and secondary alcohols, with alcohols, avoids use of organometallic or environmentally unfriendly alkylating agents by means of borrowing hydrogen (BH) or hydrogen autotransfer (HA) activation of the ...
Fei Huang, Zhuqing Liu, Zhengkun Yu
semanticscholar   +1 more source

Histidine-Specific Peptide Modification via Visible-Light-Promoted C-H Alkylation.

Journal of the American Chemical Society, 2019
Histidine (His) carries a unique heteroaromatic imidazole side chain and plays irreplaceable functional roles in peptides and proteins. Existing strategies for site-selective histidine modification predominantly rely on the N-substitution reactions of ...
Xiaoping Chen, Farong Ye, Xiaosheng Luo, Xueyi Liu, Jie Zhao, Siyao Wang, Qingqing Zhou, Gong Chen, Ping Wang   +8 more
semanticscholar   +1 more source

Guanidine Alkylation

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
A. V. Golounin, I. A. Larionova, V. A. Sokolenko   +2 more
openaire   +2 more sources

Enantioselective Allylic Alkylation with 4-Alkyl-1,4-dihydro-pyridines Enabled by Photoredox/Palladium Cocatalysis.

Journal of the American Chemical Society, 2018
Highly regio- and enantioselective allylic alkylation has been achieved enabled by the merger of photoredox and palladium catalysis. In this dual catalytic process, alkyl radicals generated from 4-alkyl-1,4-dihydropyridines act as the coupling partners ...
Honghao Zhang, Jiaji Zhao, Shouyun Yu
semanticscholar   +1 more source

Site-Selective δ-C(sp3 )-H Alkylation of Amino Acids and Peptides with Maleimides via a Six-Membered Palladacycle.

Angewandte Chemie, 2018
The site-selective functionalization of unactivated C(sp3 )-H bonds remains one of the greatest challenges in organic synthesis. Herein, we report on the site-selective δ-C(sp3 )-H alkylation of amino acids and peptides with maleimides via a kinetically ...
Bei‐Bei Zhan, Ya Li, Jingjing Xu, Xingliang Nie, Jun-fa Fan, Liang Jin, Bingfeng Shi   +6 more
semanticscholar   +1 more source

The Combination of Benzaldehyde and Nickel-Catalyzed Photoredox C(sp3 )-H Alkylation/Arylation.

Angewandte Chemie, 2019
Herein we report a highly selective photoredox C(sp3 )-H alkylation/arylation of ethers through the combination of a photo-organocatalyst (benzaldehyde) and a transition-metal catalyst (nickel).
Lumin Zhang, Xiaojia Si, Yangyang Yang, M. Zimmer, Sina Witzel, K. Sekine, M. Rudolph, A. Hashmi   +7 more
semanticscholar   +1 more source

Manganese-Catalyzed β-Alkylation of Secondary Alcohols with Primary Alcohols under Phosphine-Free Conditions

ACS Catalysis, 2018
Manganese(I) complexes bearing a pyridyl-supported pyrazolyl-imidazolyl ligand efficiently catalyzed the direct β-alkylation of secondary alcohols with primary alcohols under phosphine-free conditions.
Tingting Liu, Liandi Wang, Kaikai Wu, Zhengkun Yu   +3 more
semanticscholar   +1 more source

Alkylating properties of alkyl perfluoroazapropenyl ethers

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1976
AbstractLeitet man Z‐Perfluor‐ 2‐azapropen (I) in eine Suspension von Natriumalkoholaten in Dibutyläther, so entstehen Alkyl‐perfluorazapropenyläther (II).
Yu. A. Sizov, I. L. Knunyants, E. G. Bykhovskaya, A. F. Gontar   +3 more
openaire   +3 more sources

Visible-Light-Enabled Ruthenium-Catalyzed meta-C-H Alkylation at Room Temperature.

Angewandte Chemie, 2019
Visible-light-induced ruthenium catalysis has enabled remote C-H alkylations with excellent levels of position control under exceedingly mild conditions at room temperature.
Parthasarathy Gandeepan, Julian Koeller, Korkit Korvorapun, J. Mohr, L. Ackermann   +4 more
semanticscholar   +1 more source

ChemInform Abstract: Alkylation of Acetonitrile

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Douglass F. Taber, Sue Kong
openaire   +4 more sources