Zobrazeno 1 - 10
of 266
pro vyhledávání: '"Pudovik reaction"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 18, Iss 1, Pp 1188-1194 (2022)
Herein, we report a Lewis acid-catalyzed Pudovik reaction–phospha-Brook rearrangement sequence between diarylphosphonates or -phosphinates and α-pyridinealdehydes to access valuable phosphoric ester compounds. This transformation provides an exten
Externí odkaz:
https://doaj.org/article/b3ad3bee67ce472d84ea6d032d1e808b
Autor:
Zsuzsanna Szalai, Boldizsár Tóth, Rita Oláhné Szabó, Szilvia Bősze, Konstantin Karaghiosoff, Mátyás Czugler, László Drahos, György Keglevich
Publikováno v:
Molecules, Vol 28, Iss 16, p 6037 (2023)
New hydroxy-methylenebisphosphonic derivatives were prepared with different P-functions. The outcome of the reaction of α-oxophosphonates (YC(O)P(O)(OR)2) and dialkyl phosphites or diarylphosphine oxides depended on the Y substituent of the oxo-comp
Externí odkaz:
https://doaj.org/article/8dda46a9fa134f3399b99aa01e1966b8
Publikováno v:
Molbank, Vol 2022, Iss 3, p M1424 (2022)
Bisphosphonates are widely used in medicine and related areas, mainly for the treatment of bone diseases, such as osteoporosis. However, their synthesis is usually performed under harsh reaction conditions. In order to overcome this limitation, the p
Externí odkaz:
https://doaj.org/article/c832c68155c94c8e894303a220be1fce
Akademický článek
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Autor:
Zsuzsanna Szalai, György Keglevich
Publikováno v:
Molecules, Vol 26, Iss 24, p 7575 (2021)
The reaction of diethyl α-oxoethylphosphonate and diethyl oxobenzylphosphonate with diethyl phosphite, dimethyl phosphite, and diphenylphosphine oxide affords, depending on the substrates and conditions (nature and quantity of the amine catalyst, te
Externí odkaz:
https://doaj.org/article/d4a4adb8a7cf44af8ee40a123decdcef
Publikováno v:
Green Processing and Synthesis, Vol 6, Iss 2, Pp 197-201 (2017)
Recent synthetic methods for α-hydroxyphosphonates comprise a green, solvent-free accomplishment of the Pudovik reaction that was typically followed by extractions and recrystallization, or even by chromatography, or other operations. We now develop
Externí odkaz:
https://doaj.org/article/8789f0590491446bbad15d421222be1d
Autor:
Erika Bálint, Ádám Tajti, Anna Ádám, István Csontos, Konstantin Karaghiosoff, Mátyás Czugler, Péter Ábrányi-Balogh, György Keglevich
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 13, Iss 1, Pp 76-86 (2017)
A family of α-aryl-α-aminophosphonates and α-aryl-α-aminophosphine oxides was synthesized by the microwave-assisted solvent-free addition of dialkyl phosphites and diphenylphosphine oxide, respectively, to imines formed from benzaldehyde derivati
Externí odkaz:
https://doaj.org/article/0eb03ff84c6f4a58b50468732c78f243
Akademický článek
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Autor:
Jakub Iwanejko, Mahzeiar Samadaei, Matthias Pinter, Daniel Senfter, Sibylle Madlener, Andrzej Kochel, Nataliya Rohr-Udilova, Elżbieta Wojaczyńska
Publikováno v:
Materials, Vol 14, Iss 9, p 2138 (2021)
N-Heterocycles are considered as desirable scaffolds for the development of novel lead compounds for anticancer drug research. Among them, phosphorus-containing amino-derivatives play a crucial role. A series of imines and products of their further r
Externí odkaz:
https://doaj.org/article/6b05bb31b9dc408a91da21e76635acb3
Autor:
Johannes U. Lenz, Doris Pospiech, Hartmut Komber, Andreas Korwitz, Oliver Kobsch, Maxime Paven, Rolf W. Albach, Martin Günther, Bernhard Schartel
Publikováno v:
Materials; Volume 16; Issue 1; Pages: 172
The impact of phosphorus-containing flame retardants (FR) on rigid polyisocyanurate (PIR) foams is studied by systematic variation of the chemical structure of the FR, including non-NCO-reactive and NCO-reactive dibenzo[d,f][1,3,2]dioxaphosphepine 6-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e879a0775f01ce5a4d89395c7b82da3b