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Featured researches published by Marek Wlostowski.


Synthetic Communications | 1993

A Convenient Procedure for the Preparation of Alkyl Nitriles from Alkyl Halides. Acetone Cyanohydrin as an In Situ Source of Cyanide Ion

Paul Dowd; Bogdan K. Wilk; Marek Wlostowski

Abstract A convenient preparation of alkyl nitriles from alkyl halides is described. Acetone cyanohydrin is employed as the source of cyanide ion.


Acta Crystallographica Section C-crystal Structure Communications | 2004

Hydrogen-bonding patterns in two structural isomers of 3,6-bis(2-chlorophenyl)-1,4-dihydro-1,2,4,5-tetrazine.

Janusz Zachara; Izabela D. Madura; Marek Wlostowski

Two structural isomers, 3,6-bis(2-chlorophenyl)-1,4-dihydro-1,2,4,5-tetrazine, (I), and 3,5-bis(2-chlorophenyl)-4-amino-1H-1,2,4-triazole, (II), both C(14)H(10)Cl(2)N(4), form chain-like structures in the solid state, stabilized by N-H...N and N-H...Cl hydrogen bonds. A contribution from weak interactions to the strong hydrogen-bond network is observed in both structures. The secondary graph sets for intermolecular hydrogen bonds [R(2)(2)(11) for (I) and R(2)(2)(12) for (II)] indicate the similarity between the networks.


Organic Preparations and Procedures International | 2012

Tartaric Acid and its O-Acyl Derivatives. Part 10. Synthesis and Applications of Tartramides, Tartrimides and O-Acyltartramides and Imides

Marek Wlostowski; Paweł Ruśkowski; Ludwik Synoradzki

Introduction ................................................................................. 403 I. Synthesis of Tartramides............................................................... 404 1. Reaction of Tartaric Acid with Amines (Method A).................................404 2. Aminolysis or Ammonolysis of Tartaric Esters (Method B) .....................406 3. Reactions of O,O′-Protected Tartaric Derivatives (Method C)..................409 4. Hydrolysis of Tartaric Imides (Method D) ..............................................410 5. Aminolysis of Tartaric Imides (Method E)..............................................411 6. Deacylation of O,O′-Diacyltartaric Amides (Method F) ..........................412 7. Dihydroxylation of α,β-Unsaturated Diamides (Method G).....................413 II. Synthesis of O,O′-Diacyltartramides.............................................. 414 1. Aminolysis of O,O′-Diacyltartaric Anhydrides or Acid Chlorides (Method A)...........................................................................................414 2. Reaction of O,O′-Diacyltartaric Monoamides with Amines in the Presence of a Condensing Agent (Method B) .........................................418 3. Acylation of Tartaric Diamides (Method C) ............................................418 4. Aminolysis of O,O′-Diacyltartaric Esters (Method D) .............................419 III. Properties of Tartramides and O,O′-Diacyltartramides ................. 419 IV. Application of Tartramides and O,O′-Diacyltartramides ............... 420 1. Ligands or Catalysts in Enantioselective Reactions.................................420 2. Building Blocks in Asymmetric Synthesis ..............................................423 3. Resolving Agents ..................................................................................425 4. Miscellaneous ......................................................................................425 V. Synthesis of Tartrimides................................................................ 426 1. Reaction of Tartaric Acid with Amines (Method A).................................426 2. Deacetylation of O,O′-Diacetyltartaric Imides (Method B) ......................428 3. Dihydroxylation of Maleimides (Method C) ...........................................428 VI. Synthesis of O,O′-Diacyltartrimides .............................................. 429 1. Cyclization of O,O′-Diacyltartaric Monoamides in the Presence of Condensing Agent (Method A) ..............................................................429


Synlett | 2003

Transesterification of α-Substituted Esters Mediated by Potassium Carbonate

Dominik Jańczewski; Ludwik Synoradzki; Marek Wlostowski

α-Substituted esters were efficiently and easily transesterificated at room temperature in the presence of potassium carbonate. α-Halo esters can be transesterificated without substitution of the halogen atom.


Physical Chemistry Chemical Physics | 2011

Effect of substituents on redox, spectroscopic and structural properties of conjugated diaryltetrazines—a combined experimental and theoretical study

Ewa Kurach; David Djurado; Ján Rimarčík; Aleksandra Kornet; Marek Wlostowski; Vladimír Lukeš; Jacques Pécaut; Malgorzata Zagorska; Adam Pron


Industrial & Engineering Chemistry Research | 2006

Calcium Pantothenate, Part 1. (R,S)-Pantolactone Technology Improvement at the Tonnage Scale

Marek Wlostowski; Ludwik Synoradzki; Tomasz Rowicki


Tetrahedron Letters | 2010

Efficient S-alkylation of cysteine in the presence of 1,1,3,3-tetramethylguanidine

Marek Wlostowski; Sylwia Czarnocka; Piotr Maciejewski


Organic Process Research & Development | 2005

Optimisation of Ethyl(2-phthalimidoethoxy)acetate Synthesis with the Aid of DOE

Ludwik Synoradzki; and Dominik Jańczewski; Marek Wlostowski


Organic Process Research & Development | 2006

Calcium Pantothenate. Part 2.1 Optimisation of Oxynitrilase-Catalysed Asymmetric Hydrocyanation of 3-Hydroxy-2,2-dimethylaldehyde: Synthesis of (R)-Pantolactone

Ludwik Synoradzki; Tomasz Rowicki; Marek Wlostowski


Tetrahedron-asymmetry | 2004

Application of 1,1,3,3-tetramethylguanidine in the reaction of amino acids with pantolactone

Marek Wlostowski; Tomasz Rowicki; Ludwik Synoradzki

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Ludwik Synoradzki

Warsaw University of Technology

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Tomasz Rowicki

Warsaw University of Technology

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Paweł Ruśkowski

Warsaw University of Technology

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Adam Pron

Warsaw University of Technology

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Aleksandra Kornet

Warsaw University of Technology

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Ewa Kurach

Warsaw University of Technology

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Izabela D. Madura

Warsaw University of Technology

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Janusz Zachara

Warsaw University of Technology

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