Results 31 to 40 of about 107,279 (237)
Study on the Alkylation Reactions of N(7)-Unsubstituted 1,3-Diazaoxindoles
Molecules, 2017 The chemistry of the 5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one (1,3-diazaoxindole) compound family, possessing a drug-like scaffold, is unexplored. In this study, the alkylation reactions of N(7)-unsubstituted 5-isopropyl-1,3-diazaoxindoles bearing ...
Eszter Kókai +5 more
doaj +1 more source
Catalytic Asymmetric Reductive Alkylation of Enamines to Chiral Aliphatic Amines [PDF]
, 2020 Herein, we report a mild and general nickel-catalysed asymmetric reductive alkylation to effectively convert enamines—a class of important yet underexploited feedstock chemicals—into drug-like α-branched chiral amines and derivatives.
Jia-Wang, Wang +7 more
core +2 more sources
Asymmetric C-Alkylation of Nitroalkanes via Enzymatic Photoredox Catalysis [PDF]
, 2022 Tertiary nitroalkanes and the corresponding α-tertiary amines represent important motifs in bioactive molecules and natural prod-ucts. The C-alkylation of secondary nitroalkanes with electrophiles is a straightforward strategy for constructing tertiary ...
Jose, Carceller +4 more
core +2 more sources
Supported metal catalysts for friedel-crafts alkylation [PDF]
, 2013 Doctor EducationisThe research focused on the synthesis, characterisation and activity of zeolite supported metal catalysts for the Friedel-Crafts alkylation of benzene with t-butyl chloride.
Hlatywayo, Tapiwa
core +1 more source
Catalytic Alkylation of Brown Coal and Peat
Eurasian Chemico-Technological Journal, 2012 The alcohol alkylation of low-grade metamorphic coal and peat in the presence of mineral and organic acids was studied using FTIR, NMR, and GC-MS. The impact of the reaction conditions on the yield of extractable matter was investigated experimentally ...
S. I. Zherebtsov, Z. R. Ismagilov
doaj +1 more source
Molecules, 2021 Marine polysaccharides are part of the huge seaweeds resources and present many applications for several industries. In order to widen their potential as additives or bioactive compounds, some structural modifications have been studied.
Tiphaine Wong +6 more
doaj +1 more source
Vinylogous Hydrazone Strategy for the Organocatalytic Alkylation of Heteroaromatic Derivatives [PDF]
, 2021 A new umpolung approach for the asymmetric FriedelCrafts-type alkylation of electron-poor heteroaromatic systems has been developed. It is based on the vinylogous reactivity of hydrazones derived from heteroaromatic aldehydes.
Beata, Łukasik +3 more
core +1 more source
Room-Temperature, Base-Mediated Selective Synthesis of 2-(Arylamino)ethanols and 2-Aryloxyethanols
SynOpen, 2019 A simple and efficient protocol for base-mediated selective synthesis of 2-(arylamino)ethanols from primary aromatic amines and 2-aryloxyethanols from phenols, promoted by K2CO3 has been achieved under mild conditions.
Rahul B. Sonawane +3 more
doaj +1 more source
Green CarbonThe direct alkylation of benzene with alkanes is an effective method for alkylbenzene production. Our group previously discovered that a mixture of supported Pd nanoparticles and solid acids effectively promoted the alkylation of benzene with alkanes ...
Satoshi Misaki +5 more
doaj +1 more source
Alkylation of 2,4-(1H,3H)-Quinazolinediones with Dialkyl Carbonates Under Microwave Irradiations
Molecules, 2009 Alkylation is a very important chemical reaction which modifies the biological properties of drugs. Quinazolinedione derivatives are of considerable interest due to their wide array of pharmacological properties.We now report application of a practical ...
Martha Cecilia Meza +4 more
doaj +1 more source