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Piotr Tomasik

Pedagogical University

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Publication

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Journal of The Chemical Society, Chemical Communications | 1981

Mechanism of direct side-chain acylamination and aminoarylation of 2- and 4-picoline 1-oxides

R. A. Abramovitch; Dorota A. Bramovitch; Piotr Tomasik

The isolation of radical coupling products and the observation of appropriate C.I.N.D.P. signals suggest that most of the title reactions proceed by homolysis of the anhydro-bases (4) or (9) followed by radical recombinations; a diaza-oxy-Cope rearrangement may still account for the formation of α-acylamination products.

Journal of The Chemical Society, Chemical Communications | 1979

Direct side-chain acylamination of 4-picoline 1-oxides and related compounds

R. A. Abramovitch; Dorota A. Abramovitch; Piotr Tomasik

The anhydro bases formed from the reaction of 4-picoline 1-oxides with N-substituted benzimidoyl chlorides and a strong base undergo a new molecular rearrangement to give mixtures of the side chain acylaminated (e.g.4) and acylaminoarylated products (e.g.5); 2-picoline 1-oxides behave similarly.

Journal of Heterocyclic Chemistry | 1983

Friedländer condensation of 1H-pyrazolin-5-ones with O-aminobenzaldehydes. Synthesis of 1H-pyrazolo[3,4-B]quinolines

Danuta Tomasik; Piotr Tomasik; R. A. Abramovitch

Journal of Organic Chemistry | 1983

Base-catalyzed rearrangement of N-(aryloxy)pyridinium salts. Effect of a 3-substituent in the pyridine ring upon orientation. Synthesis of novel tricyclic rings

R. A. Abramovitch; Muthiah N. Inbasekaran; S. Kato; Teresa A. Radzikowska; Piotr Tomasik

Journal of Organic Chemistry | 1983

Direct acylamination of pyridine 1-oxide with N-phenylarenimidoyl chlorides and fluorides

R. A. Abramovitch; Jacek Pilski; Antoni Konitz; Piotr Tomasik

Journal of Heterocyclic Chemistry | 1983

Friedländer condensation of 1 H -pyrazolin-5-ones with O -aminobenzaldehydes. Synthesis of 1 H -pyrazolo[3,4- B ]quinolines

Danuta Tomasik; Piotr Tomasik; R. A. Abramovitch

Journal of Heterocyclic Chemistry | 1978

Oxidation of pyridines with copper sulfate

Piotr Tomasik; Adam Woszczyk; R. A. Abramovitch

ChemInform | 1983

BASE-CATALYZED REARRANGEMENT OF N-(ARYLOXY)PYRIDINIUM SALTS. EFFECT OF A 3-SUBSTITUENT IN THE PYRIDINE RING UPON ORIENTATION. SYNTHESIS OF NOVEL TRICYCLIC RINGS

R. A. Abramovitch; M. N. Inbasekaran; S. Kato; T. A. Radzikowska; Piotr Tomasik

Journal of Organic Chemistry | 1979

Azide-catalyzed rearrangement of N-(aryloxy)pyridinium salts. Facile synthesis of 3-(o-hydroxyphenyl)pyridines

R. A. Abramovitch; Adrian L. Miller; Teresa A. Radzikowska; Piotr Tomasik

ChemInform | 1984

DIRECT ACYLAMINATION OF PYRIDINE 1-OXIDE WITH N-PHENYLARENIMIDOYL CHLORIDES AND FLUORIDES

R. A. Abramovitch; J. Pilski; A. Konitz; Piotr Tomasik

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R. A. Abramovitch

Clemson University

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Adrian L. Miller

University of Alabama

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Muthiah N. Inbasekaran

University of Alabama

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Adam Woszczyk

Pedagogical University

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