Search Results - "Majireck, Max M."
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Total Syntheses of the Monoterpene Indole Alkaloids (±)-Alstilobanine A and E and (±)-Angustilodine
Published in Journal of organic chemistry (03-01-2014)“…A synthetic strategy has been developed culminating in stereoselective total syntheses of the small class of unusual monoterpenoid indole alkaloids exemplified…”
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Synthesis of Bench-Stable N-Quaternized Ketene N,O‑Acetals and Preliminary Evaluation as Reagents in Organic Synthesis
Published in Journal of organic chemistry (17-09-2021)“…N-Quaternized ketene N,O-acetals are typically an unstable, transient class of compounds most commonly observed as reactive intermediates. In this report, we…”
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Total Synthesis of the Unusual Monoterpenoid Indole Alkaloid (±)-Alstilobanine A
Published in Angewandte Chemie International Edition (14-12-2012)“…Tetracyclic monoterpene alkaloid alstilobanine A was obtained in racemic form. The pivotal steps of the total synthesis are a novel conjugate addition of an…”
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Synthesis, Characterization, and Computational Modeling of N-(1-Ethoxyvinyl)pyridinium Triflates, an Unusual Class of Pyridinium Salts
Published in Molecules (Basel, Switzerland) (14-02-2018)“…-Substituted pyridinium salts constitute one of the most valuable reagent classes in organic synthesis, due to their versatility and ease of use. Herein we…”
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Niche-Based Screening in Multiple Myeloma Identifies a Kinesin-5 Inhibitor with Improved Selectivity over Hematopoietic Progenitors
Published in Cell reports (Cambridge) (10-02-2015)“…Novel therapeutic approaches are urgently required for multiple myeloma (MM). We used a phenotypic screening approach using co-cultures of MM cells with bone…”
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A Study of the Scope and Regioselectivity of the Ruthenium-Catalyzed [3 + 2]-Cycloaddition of Azides with Internal Alkynes
Published in Journal of organic chemistry (27-10-2006)“…[3 + 2]-Cycloadditions of alkyl azides with various unsymmetrical internal alkynes in the presence of Cp*RuCl(PPh3)2 as catalyst in refluxing benzene have been…”
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Bench-Stable 2-Halopyridinium Ketene Hemiaminals as Reagents for the Synthesis of 2-Aminopyridine Derivatives
Published in Organic letters (20-09-2024)“…2-Chloro-1-(1-ethoxyvinyl)pyridinium triflate and several other bench-stable -(1-alkoxyvinyl) 2-halopyridinium triflates have been developed as reagents for…”
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Synthesis of phthalan and phenethylamine derivatives via addition of alcohols to rhodium(II)-azavinyl carbenoids
Published in Tetrahedron letters (22-03-2017)“…[Display omitted] •Cyclization of alcohols to Rh(II)-azavinyl carbenoids provides furans/phthalans.•Products contain a synthetically versatile…”
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Synthesis and crystal structure of a bench-stable pyridinium ketene hemiaminal: 1-(1-ethoxyethenyl)-2-[methyl(phenyl)amino]pyridin-1-ium trifluoromethanesulfonate
Published in Acta crystallographica. Section E, Crystallographic communications (01-08-2023)“…The novel bench-stable N -quaternized ketene N , O -acetal, C 16 H 19 N 2 O + ·CF 3 O 3 S − , was synthesized and its structure determined. The title compound…”
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Alternative Synthesis and Structural Analysis of the Antioxidant and Antitumor Agent 2-(3,5-Dimethoxyphenyl)-2,3-Dihydroquinolin-4(1H)-One
Published in Journal of chemical crystallography (01-03-2022)“…Herein we present the synthesis, structure and NMR and mass spectroscopic analyses of the antioxidant 2-(3,5-dimethoxyphenyl)-2,3-dihydroquinolin-4(1 H )-one (…”
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Synthesis and crystal structure of a bench-stable pyridinium ketene hemiaminal: 1-(1-eth-oxy-ethen-yl)-2-[meth-yl(phen-yl)amino]-pyridin-1-ium tri-fluoro-methane-sulfonate
Published in Acta crystallographica. Section E, Crystallographic communications (07-07-2023)“…The N -quaternized ketene N , O -acetal, 1-(1-ethoxyvinyl)-2-(methyl(phenyl)amino)pyridin-1-ium trifluoromethanesulfonate was synthesized and its…”
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Efficient methodology for alkylation of vinylnitroso compounds with carbon nucleophiles
Published in Tetrahedron letters (14-04-2010)“…A diverse array of nitrosoalkenes derived from both acyclic and cyclic ketones, as well as aldehydes, via the Denmark protocol using α-chloro-O-TBS-oximes can…”
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An expedient reductive method for conversion of ketoximes to the corresponding carbonyl compounds
Published in Tetrahedron letters (01-07-2010)“…A wide array of readily prepared pivalates of ketoximes can be converted to their corresponding ketones in good yields by treatment with iron powder in THF…”
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Preparation of N-(2-alkoxyvinyl)sulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
Published in Journal of visualized experiments (03-01-2018)“…Decomposition of N-tosyl-1,2,3-triazoles with rhodium(II) acetate dimer in the presence of alcohols forms synthetically versatile…”
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A mild, efficient method for the oxidation of α-diazo-β-hydroxyesters to α-diazo-β-ketoesters
Published in Tetrahedron letters (05-05-2008)“…A variety of α-diazo-β-ketoesters can be prepared in high yields via addition of ethyl lithiodiazoacetate to aliphatic, aromatic, and α,β-unsaturated…”
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Regioselective α-Monochlorination of N-Protected-3-piperidones
Published in Heterocycles (01-01-2012)Get full text
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Alternative Synthesis and Structural Analysis of the Antioxidant and Antitumor Agent 2--One
Published in Journal of chemical crystallography (01-03-2022)“…Herein we present the synthesis, structure and NMR and mass spectroscopic analyses of the antioxidant 2-(3,5-dimethoxyphenyl)-2,3-dihydroquinolin-4(1H)-one…”
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Total Synthesis of the Unusual Monoterpenoid Indole Alkaloid (±)-AlstilobanineA
Published in Angewandte Chemie International Edition (14-12-2012)“…Tetracyclic monoterpene alkaloid alstilobanineA was obtained in racemic form. The pivotal steps of the total synthesis are a novel conjugate addition of an…”
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Total Synthesis of the Unusual Monoterpenoid Indole Alkaloid (±)-Alstilobanine A
Published in Angewandte Chemie (14-12-2012)“…Das tetracyclische Monoterpen‐Alkaloid Alstilobanin A wurde in racemischer Form erhalten. Wichtige Stufen seiner Totalsynthese sind eine neuartige konjugierte…”
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