Results 11 to 20 of about 1,739 (160)

Diastereoselective synthesis of highly substituted cyclohexanones and tetrahydrochromene-4-ones via conjugate addition of curcumins to arylidenemalonates [PDF]

open access: yesBeilstein Journal of Organic Chemistry
A cascade inter–intramolecular double Michael strategy for the synthesis of highly functionalized cyclohexanones from curcumins and arylidenemalonates is reported. This strategy works in the presence of aqueous KOH using TBAB as a suitable phase transfer
Deepa Nair   +3 more
doaj   +2 more sources

Ni-catalysed acceptorless dehydrogenative aromatisation of cyclohexanones enabled by concerted catalysis specific to supported nanoparticles [PDF]

open access: yesNature Communications
The dehydrogenative aromatisation of cyclohexanone derivatives has had a transformative influence on the synthesis of aromatic compounds because functional groups can be easily introduced at desired positions via classic organic reactions without being ...
Takehiro Matsuyama   +3 more
doaj   +2 more sources

Synthesis of Spiro Pyrrolidines From the Addition of Schiff Bases to -Arylidene Cyclohexanones [PDF]

open access: yesمجلة التربية والعلم, 2008
A series of -arylidene cyclohexanones (1-4) had been prepared via Claisen-Schmidt condensation, while other series of N-arylidene benzylamines (Schiff bases 5-10) had also been synthesized by equimolar addition.
A Al-Hamdany, A Mustafa, ِA Hamza
doaj   +1 more source

Synthesis and Characterization of Multiple Functionalized Cyclohexanone Using Diels–Alder Reaction of α-Nitrocinnamate

open access: yesReactions, 2022
A systematic study of the Diels–Alder reaction of α-nitrocinnamate was performed. The reaction of p-substituted α-nitrocinnamate with 2,3-dimethyl-1,3-butadienes smoothly proceeded regardless of the p-substituent, which was either an electron-donating or
Takumi Hamada   +2 more
doaj   +1 more source

MOF-808 as a Highly Active Catalyst for the Diastereoselective Reduction of Substituted Cyclohexanones

open access: yesMolecules, 2022
Zr-containing MOF-808 is an excellent heterogeneous catalyst for the diastereoselective Meerwein–Ponndorf–Verley reduction of substituted cyclohexanones.
Hans Hilmar Mautschke   +1 more
doaj   +1 more source

The xanthate route to six-membered carbocycles

open access: yesJournal of Chemical Research, 2022
Convergent routes to various six-membered carbocyclic architectures exploiting the unique radical chemistry of xanthates are described in this brief review. Three approaches are discussed.
Samir Z Zard
doaj   +1 more source

Stereoselective (3+3)-Carbocyclization of Enamines with Nitroallylating Reagents

open access: yesCHIMIA, 1985
The enamines from open-chain (3-pentanone) and cyclic (cyclopentanone, cyclohexanones, β-tetralone) ketones and the amines pyrrolidine, morpholine or (S)-2-methoxymethyl-pyrrolidine combine with E-3-phenyl-2-nitro-2-propen-1-yl or E-2-nitro-2-hepten-1 ...
Dieter Seebach   +4 more
doaj   +1 more source

Radical-mediated C-C cleavage of unstrained cycloketones and DFT study for unusual regioselectivity

open access: yesNature Communications, 2020
C-C bond scission of unstrained cycloketones with high regioselectivity is a challenging synthetic task. Here, the authors show a facile C-C cleavage of cyclohexanones and cyclopentanones with unusual selectivity under mild conditions with the aid of an ...
Mingyang Wang   +5 more
doaj   +1 more source

One-pot and metal-free synthesis of 3-arylated-4-nitrophenols via polyfunctionalized cyclohexanones from β-nitrostyrenes

open access: yesBeilstein Journal of Organic Chemistry, 2020
β-Nitrostyrenes underwent a Diels–Alder reaction with Danishefsky’s diene to afford cyclohexenes together with the corresponding hydrolyzed products, 3-arylated-5-methoxy-4-nitrocyclohexanones.
Haruyasu Asahara   +2 more
doaj   +1 more source

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