Results 51 to 60 of about 26,755 (292)

Branch-Selective Addition of Unactivated Olefins into Imines and Aldehydes [PDF]

open access: yes, 2018
Radical hydrofunctionalization occurs with ease using met-al-hydride atom transfer (MHAT) catalysis to couple alkenes and competent radicalophilic electrophiles. Traditional two-electron electrophiles have remained unreactive.
Suhelen, Vásquez-Céspedes   +4 more
core   +1 more source

Synthesis and enantioselective hydrogenation of seven-membered cyclic imines: substituted dibenzo[b,f][1,4]oxazepines [PDF]

open access: yes, 2011
Synthesis and enantioselective hydrogenation of seven-membered cyclic imines: substituted dibenzo[b,f][1,4]oxazepinesHighly enantioselective hydrogenation of seven-membered cyclic imines, substituted dibenzo[b,f][1,4]oxazepines, was achieved, with up to ...
Li, Wei   +6 more
core   +1 more source

Palladium(0) Catalyzed Synthesis of (E)-4-Bromo-N-((3-bromothiophen-2-yl)methylene)-2-methylaniline Derivatives via Suzuki Cross-Coupling Reaction: An Exploration of Their Non-Linear Optical Properties, Reactivity and Structural Features

open access: yesMolecules, 2021
A series of (E)-4-bromo-N-((3-bromothiophen-2-yl)methylene)-2-methylaniline analogs synthesized in considerable yields through Suzuki cross-coupling reactions.
Komal Rizwan   +6 more
doaj   +1 more source

Reduction of Secondary Amides to Imines Catalysed by Schwartz’s Reagent [PDF]

open access: yes, 2022
The partial reduction of amides is a challenging transformation that must overcome the intrinsic stability of the amide bond, a ubiquitous motif in organic chemistry, and exhibit high chemoselective control.
Liam, Donnelly   +2 more
core   +1 more source

Periselectivity in the Aza-Diels–Alder Reaction of 1-Azadienes with α-Oxoketenes: A Combined Experimental and Theoretical Study

open access: yesMolecules, 2020
Inversions in the periselectivity of formal aza-Diels–Alder cycloadditions between α-oxoketenes generated by a thermally-induced Wolff rearrangement and 1-azadienes were observed experimentally as a function of the α-oxoketene and the 1-azadiene, as well
Marc Presset   +4 more
doaj   +1 more source

Rhodium-Catalyzed Addition of Boronic Acids to Vinylogous Imines Generated in situ from Sulfonylindoles [PDF]

open access: yes, 2011
Rhodium-Catalyzed Addition of Boronic Acids to Vinylogous Imines Generated in situ from SulfonylindolesThe rhodium-catalyzed addition of arylboronic acids to vinylogous imines generated in situ from sulfonylindoles has been developed.
江国防   +5 more
core   +1 more source

Determination of Stability for imines derived from carbonyl compounds by conductivity measurements

open access: yesTikrit Journal of Pure Science, 2018
The project explained for the first time, how conductivity method was used in the determination of stability of some imines derived from mother compounds 2-acetyl pyridine, 3 or 4 –hydroxy benzaldehyde, and others. The method as found, simple precise
A.S.P. Azzouz, D.B.AL-Bakzo
doaj   +1 more source

Imine reductases (IREDs)

open access: yesCurrent Opinion in Chemical Biology, 2017
Imine reductases (IREDs) have emerged as a valuable new set of biocatalysts for the asymmetric synthesis of optically active amines. The development of bioinformatics tools and searchable databases has led to the identification of a diverse range of new IRED biocatalysts that have been characterised and employed in different synthetic processes.
Mangas-Sanchez, Juan   +8 more
openaire   +4 more sources

Schiff Bases: Interesting Scaffolds with Promising Antitumoral Properties

open access: yesApplied Sciences, 2021
Schiff bases, named after Hugo Schiff, are highly reactive organic compounds broadly used as pigments and dyes, catalysts, intermediates in organic synthesis, and polymer stabilizers.
Domenico Iacopetta   +6 more
doaj   +1 more source

Synthesis and Reactions of New 4-Oxo-4H-benzopyran-3-carboxaldehydes Containing Hydroxy Groups or 2-Oxopyran Cycles

open access: yesMolecules, 1998
The synthesis of eight hydroxy- and 2-oxopyranochromone-3-carboxaldehydes 3, 5 and their reactions with 2-hydroxyaniline, 2,4-dinitrophenylhydrazine and 2-benzothiazolylhydrazine were investigated.
Hafez M. El-Shaaer   +4 more
doaj   +1 more source

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