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Dive into the research topics where A. Jonczyk is active.

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Featured researches published by A. Jonczyk.


Journal of The Chemical Society, Chemical Communications | 1977

Stereochemical control of the interfacial darzens condensation

A. Jonczyk; Andrzej Kwast; Mieczyslaw Makosza

The condensation of α-chlorophenylacetonitrile (1) with benzaldehyde (2) carried out in the presence of 50% aq. NaOH and a quaternary ammonium catalyst gives trans-2,3-diphenylglycidonitrile, while without the catalyst, the cis-isomer predominates; in the latter case the reaction proceeds at the interface.


ChemInform | 1971

RK. ORGANISCHER ANIONEN 311. MITT. KATALYTISCHE ALKYLIERUNG VON 1-ACENAPHTHENON

A. Jonczyk; Barbara Serafin; Ewa Skulimowska

Die katalytische Alkylierung des Acenaphthenons (III) mit den ogw-Dibromalkanen (II) bzw. mit den Alkylhalogeniden (IVa)-(IVb) in Gegenwart von NaOH/DMSO und Triathylbenzylammoniumchlorid fuhrt zu den Spiranen (I) (36-55% Ausbeute) bzw. zu den Dialkylderivaten (Va)-(Vb) (39,5-63%); das Derivat (Vc) wird aus (III) mit Acrylonitril oder β-Chlorpropionsaureiso- I20 propylester nach anschliesender Hydrolyse erhalten.


Angewandte Chemie | 1978

Quaternary Ammonium Salts as Catalysts of Nucleophilic Substitution Reactions in a Solid‐Liquid Two‐Phase System

A. Jonczyk; Maria Ludwikow; Mieczysław Ma̧kosza


Angewandte Chemie | 1978

Quartäre Ammoniumsalze als Katalysatoren bei nucleophilen Substitutionsreaktionen im Fest‐Flüssig‐Zweiphasensytem

A. Jonczyk; Maria Ludwikow; Mieczyslaw Makosza


Angewandte Chemie | 1979

Elemental Sulfur/Alkali Metal Hydroxide/Dimethyl Sulfoxide—A New “Reagent” for Preparing Organic Sulfur compounds

A. Jonczyk


ChemInform | 1979

REACTIONS OF ORGANIC ANIONS. 89. REACTIONS OF CARBON TETRACHLORIDE WITH CARBON ACIDS IN CATALYTIC TWO-PHASE SYSTEM

A. Jonczyk; A. Kwast; Mieczyslaw Makosza


Angewandte Chemie | 1979

Schwefel/Alkalimetallhydroxid/Dimethylsulfoxid – ein neues „Reagens” zur Synthese organischer Schwefelverbindungen

A. Jonczyk


ChemInform | 1978

SEARCH FOR A NEW METHOD FOR SYNTHESIS OF THE ANALGESIC AGENT ′FENTANYL′

A. Jonczyk; M. Jawdosiuk; M. Makosza; J. Czyzewski


ChemInform | 1986

Reactions of Organic Anions. Part 122. Reactions of Carbanions with Carbon Tetrachloride in Two-Phase Systems.

Mieczyslaw Makosza; A. Kwast; E. Kwast; A. Jonczyk


ChemInform | 1980

REACTIONS OF ORGANIC ANIONS. XLV. A SIMPLE PROCEDURE FOR THE PREPARATION OF PURE MONOALKYL PHENYLACETONITRILES

A. Jonczyk; Maria Ludwikow; Mieczyslaw Makosza

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Michal Fedorynski

Warsaw University of Technology

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Andrzej Kwast

Polish Academy of Sciences

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