Zobrazeno 1 - 10 of 17 pro vyhledávání: '"Krzysztof Kostka"'
1
4-Derivatives Coumarin-3-Phosphonic Acids and Esters
Autor: Slawomir Pastuszko, Krzysztof Kostka, Elzbieta Budzisz, Andrzej Kotyński
Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 134:199-209
In the Arbuzov reactions of 2'-bromoacetoxyphenone with trimethyl phosphite the derivatives in position 4 of 3-phosphonocoumarinic acids and esters were obtained.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1b42fecbfbf7d509724d441dd75dcca9
https://doi.org/10.1080/10426509808545464
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2
Synthesis and Anticancer Activity of 2-Substituted 2,3-Dihydro-1,3,2-benzoxazaphosphorin-4-one and its 2-Oxide Derivatives
Autor: Krzysztof Kostka, Marek Porada, Julita Graczyk
Publikováno v: Archiv der Pharmazie. 327:233-236
As a result of the reaction of salicylic amide with PCl3 and POCl3 2-chloro-2,3-dihydro-1,3,2-benzoxazaphosphorin-4-one (1) and its 2-oxide 2 are obtained. Compounds 1 and 2 form amides with amines in 2-position. Antineoplastic action of the derivati
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::885022396e8d57239599202fb140c246
https://doi.org/10.1002/ardp.19943270408
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3
THE REACTIONS OF DIETHYL 2,3-DIHYDRO-4H-1,3-BENZOXAZIN-4-ONE-2-PHOSPHONATE WITH NUCLEOPHILES
Autor: Andrzej Kotyński, Krzysztof Kostka
Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 83:215-221
The reactions of diethyl 2,3-dihydro-4H-1,3-benzoxazin-4-one-2-phosphonate with nucleophilic reagents (nitric, organophosphoric, and sulfuric) were investigated. Two lines of derivatives were obtained: N-salicyloylaminomethanephosphonates 2 and N-sal
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7f5e5fc2f27eee5e28bf3634ec4baf16
https://doi.org/10.1080/10426509308034365
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4
INVESTIGATION IN THE CHROMONE SERIES. PART XXI. 4,4-DICHLORO-4H-1-BENZOPYRAN-2-CARBONYL CHLORIDE IN REACTION WITH PHOSPHITES
Autor: Mieczyslaw J. Grabowski, Andrzej Stępień, Krzysztof Kostka, Roman Modranka
Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 83:209-214
4,4-Dichloro-4H-1-benzopyran-2-carbonyl chloride in the reaction with tertiary phosphites forms two stereoisomeric products (E) and (Z). The mechanism of their formation and the structure has been suggested.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c47ac44077b5fca6007bb3c09d5b31ef
https://doi.org/10.1080/10426509308034364
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5
ChemInform Abstract: Synthesis and Anticancer Activity of 2-Substituted 2,3-Dihydro-1,3,2- benzoxazaphosphorin-4-one and Its 2-Oxide Derivatives
Autor: Krzysztof Kostka, Marek Porada, Julita Graczyk
Publikováno v: ChemInform. 25
As a result of the reaction of salicylic amide with PCl3 and POCl3 2-chloro-2,3-dihydro-1,3,2-benzoxazaphosphorin-4-one (1) and its 2-oxide 2 are obtained. Compounds 1 and 2 form amides with amines in 2-position. Antineoplastic action of the derivati
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12f5909dec32067ec61f5ceacc1d2b7e
https://doi.org/10.1002/chin.199431197
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7
ChemInform Abstract: The Reactions of Diethyl 2,3-Dihydro-4H-1,3-benzoxazin-4-one-2- phosphonate with Nucleophiles
Autor: Krzysztof Kostka, Andrzej Kotyński
Publikováno v: ChemInform. 25
The reactions of diethyl 2,3-dihydro-4H-1,3-benzoxazin-4-one-2-phosphonate with nucleophilic reagents (nitric, organophosphoric, and sulfuric) were investigated. Two lines of derivatives were obtained: N-salicyloylaminomethanephosphonates 2 and N-sal
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf0ec45989432ef150dc230ccfe51bdb
https://doi.org/10.1002/chin.199419204
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8
ChemInform Abstract: Synthesis and Action on the Central Nervous System of 3-Substituted 2- Phenyl-2,3-dihydro-4H-1,3,2-benzoxazaphosphorin-4-one 2-Oxide and 2- Sulfide Derivatives
Autor: Elzbieta Zyner, Wanda Pakulska, A. Szadowska, Krzysztof Kostka, Marek Porada
Publikováno v: ChemInform. 28
The synthesis of 3-substituted 2-phenyl-2,3-dihydro-4H-1,3,2-benzoxazaphosphorin-4-one 2-sulfide derivatives is described. The action of a series 2-oxide (1-6) and 2-sulfide (7-12) derivatives on the central nervous system has been evaluated. Compoun
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e5335d74812dd34527de6580cbe4cbc
https://doi.org/10.1002/chin.199749191
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10
INVESTIGATION IN THE CHROMONE SERIES. PART XX. CHROMONE-3-PHOSPHONIC ACIDS AND ESTERS
Autor: Marek Porada, Krzysztof Kostka, Slawomir Pastuszko
Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 71:67-74
In the Arbuzov and Perkow reactions of 2-bromo-2′-acyloxyacetophenone with trimethyl phosphite the derivatives in position 2 of 3-phosphonochromone acids and esters and 1–2′-acyloxyphenylvinylphosphates were obtained.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5567ade2f8f57197b406c196103b231e
https://doi.org/10.1080/10426509208034497
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