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Jaroslav Jonas

Masaryk University

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Featured researches published by Jaroslav Jonas.

Tetrahedron | 2002

Highly diastereoselective thermal decomposition of 3-(azidomethylene)dihydrofuran-2-one

Ctibor Mazal; Jaroslav Jonas; Zdirad Žák

Thermal decomposition of 3-(azidomethylene)dihydrofuran-2-one in various solvents at temperatures above 70°C gave a spiroaziridine derivative with an excellent diastereoselectivity. A mechanism of this new kind of substituted vinyl azide decomposition has been suggested based mainly on the stereochemistry and kinetic data of the reaction. A spiroazirine derivative proposed as a reaction intermediate was trapped by the decomposition of title azide in acetic anhydride.

Liebigs Annalen | 1995

1,3-dipolar cycloaddition of diphenylnitrilimine to substituted dihydro-3-methylene-2(3H)-furanones

Slávka Štverková; Zdirad Žák; Jaroslav Jonas

Collection of Czechoslovak Chemical Communications | 1984

Transformations of 3-(methylene)dihydro-2(3H)-furanone derivatives

Ctibor Mazal; Zdeněk Jurka; Jaroslav Jonas

Collection of Czechoslovak Chemical Communications | 1993

Nucleophilic Vinylic Substitution on α-Tosyloxymethylene Lactones

Ctibor Mazal; Jaroslav Jonas

Collection of Czechoslovak Chemical Communications | 1991

Substituted 1,2-diaza-7-oxaspiro[4,4]nonen-6-ones; Preparation, NMR spectra, and crystal structure

Jaroslav Jonas; Tadeusz Głowiak; Zdirad Žák; Petr Trška; Ctibor Mazal

Collection of Czechoslovak Chemical Communications | 1984

Configuration of sodium salt and preparation of sulphonates and carboxylates of (E)- and (Z)-3-(hydroxymethylene)dihydro-2(3H)-furanone

Jaroslav Jonas

European Journal of Organic Chemistry | 1993

1,3‐Dipolar Cycloaddition of Benzonitrile Oxide to Substituted 4,5‐Dihydro‐3‐methylene‐2(3H)‐furanones

Slávka Štverková; Zdirad Žák; Jaroslav Jonas

Collection of Czechoslovak Chemical Communications | 1985

Sodium salt, sulfonates and carboxylates of (E)- and (Z)-3(hydroxymethylene)-5-methyldihydro-2(3H)-furanone

Ctibor Mazal; Věra Rothová; Jaroslav Jonas

Collection of Czechoslovak Chemical Communications | 2000

Stereoselective 1,3-dipolar cycloaddition of a nitrile ylide photochemically generated from 2,3-diphenyl-2H-azirine to substituted methylene lactones

Jakub Častulík; Jaroslav Jonas; Ctibor Mazal

Collection of Czechoslovak Chemical Communications | 1990

Crystal structures of some 3-(hydroxymethylene)dihydro-2(3H)-furanone derivatives

Tadeusz Głowiak; Zdirad Žák; Jaroslav Jonas

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Ctibor Mazal

Masaryk University

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Zdirad Žák

Masaryk University

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Jakub Častulík

Masaryk University

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Otakar Humpa

Masaryk University

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Slávka Štverková

Masaryk University

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Tadeusz Głowiak

University of Wrocław

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Petr Trška

Institute of Chemical Technology in Prague

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Vladimír Sklenář

Masaryk University

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Zvi Rappoport

Hebrew University of Jerusalem

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