Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Henrietta Forintos"'
Autor:
Henrietta Forintos, Kalman Dr Dipl Chem Harsanyi, György Keglevich, István Greiner, György Domány
Publikováno v:
Heteroatom Chemistry. 16:562-565
Michael addition of the corresponding anions derived from diphenylphosphine oxide, dialkylphosphites, and a cyclic phosphite to α-methylene-glutaric esters (1) afforded the title compounds (2–6). Double debenzylation of 2-phosphono glutaric esters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::196eb2dbd2c00ba4989664e633b312ac
https://doi.org/10.1002/hc.20142
https://doi.org/10.1002/hc.20142
Publikováno v:
Current Organic Chemistry. 8:1245-1261
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e8aafaec028e54a08309bd87a7cdcce
https://doi.org/10.2174/1385272043370023
https://doi.org/10.2174/1385272043370023
Autor:
Marek L. Główka, Tomasz Nonas, Juliusz Rudzinski, György Keglevich, Henrietta Forintos, Stefan Jankowski
Publikováno v:
Tetrahedron. 60:2789-2797
The Baeyer–Villiger oxidation of 7-phosphanorbornene 7-oxides with sterically demanding substituents on the phosphorus atom ( 4a – d ) by m -chloroperbenzoic acid afforded the title products ( 5a – d ) as a mixture of two regioisomers ( A and B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbcaa33146b4d7d502b502a9748e9c9f
https://doi.org/10.1016/j.tet.2004.01.069
https://doi.org/10.1016/j.tet.2004.01.069
Autor:
Henrietta Forintos, Tamás Körtvélyesi, László Tőke, Ágnes Gyöngyvér Vaskó, György Keglevich, Izvekov Vladiszlav
Publikováno v:
Tetrahedron. 58:3721-3727
New evidence based on spectroscopy, quantum chemical calculations and reactivity suggest that the spirocyclic oxaphosphetes (5) formed by the [2+2] cycloaddition of the title P-heterocycles (4) and DMAD are intermediates to afford a stabilised phosph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06cec59eb42f58ff6c0fbb17bb838b85
https://doi.org/10.1016/s0040-4020(02)00343-5
https://doi.org/10.1016/s0040-4020(02)00343-5
Autor:
Tamás Körtvélyesi, Vladiszlav Izvekov, Krisztina Ludányi, Annamaria Tamas, Henrietta Forintos, György Keglevich, Laszlo Toke
Publikováno v:
Tetrahedron Letters. 42:4417-4420
The [2+2] cycloaddition reaction of dimethyl acetylenedicarboxylate (DMAD) and the PO moiety of cyclic P-(2,4,6-triisopropylphenyl) phosphine oxides giving an entry to oxaphosphetes is of general value and extended to cyclic and alicyclic phosphin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fab1e258833194cb9f0de1391519dd0
https://doi.org/10.1016/s0040-4039(01)00740-7
https://doi.org/10.1016/s0040-4039(01)00740-7
Autor:
Melinda Sipos, Henrietta Forintos, Károly Vékey, András Dobó, György Keglevich, Krisztina Ludányi, László Tőke, Antal Tungler
Publikováno v:
Heteroatom Chemistry. 12:528-533
The ring enlargement of 1-(2,4,6-trialkylphenyl)2,5-dihydro-1H-phosphole oxides (1) via 6,6-dichloro-3-Phosphabicyclo[3.1.0]hexanes (2) afforded the double-bond isomers of 1,2-dihydrophosphinine oxides (3). Catalytic hydrogenation of the isomeric 1-(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d46205c15ce213894d06c020dcedb400
https://doi.org/10.1002/hc.1080
https://doi.org/10.1002/hc.1080
Publikováno v:
Tetrahedron: Asymmetry. 11:4433-4436
The enantiomers of spirocyclic oxaphosphetes possessing the sterically bulky 2,4,6-triisopropyl-phenyl group bound to the pentacoordinated phosphorus stereogenic centre could be distinguished in optically active amines as solvents.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eae60f708d93d5387d9c097652550a4b
https://doi.org/10.1016/s0957-4166(00)00426-2
https://doi.org/10.1016/s0957-4166(00)00426-2
Autor:
Anikó Ujvári, Laszlo Toke, Krisztina Ludányi, Henrietta Forintos, István Bitter, György Keglevich
Publikováno v:
Journal of Chemical Research. 2005:215-217
Phosphonium salts 3 obtained by the quaternisation of 1-aryl-2,5-dihydro-1H-phospholes 2 with methyl bromoacetate are suitable precursors of the corresponding heterocyclic phosphoranes 5. They were generated in situ using DBU at ambient temperature.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08d02d4de98f97762923232b3d6d4b53
https://doi.org/10.3184/0308234054213393
https://doi.org/10.3184/0308234054213393
Autor:
Laszlo Toeke, Timea Imre, Krisztina Ludányi, Gyoergy Keglevich, Anikó Ujvári, Zoltán Zsolt Nagy, Henrietta Forintos
Publikováno v:
Journal of Chemical Research. 2004:432-434
The title phosphonium ylides give an ylidene oxolactone under reductive conditions and are unreactive towards aldehydes, but are degraded by hydroxylamine to form the simpler acetic ester phosphonium ylides that do react with aldehydes in the normal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a16369f0578f110c4c388ea9be53522b
https://doi.org/10.3184/0308234041423637
https://doi.org/10.3184/0308234041423637
Autor:
James A. R. Gilks, William Wade, Christopher J. Hayes, Paul A. Clarke, Laurence Burroughs, Myriam Zbytniewski, Matthew E. Vale, Henrietta Forintos
Publikováno v:
Organicbiomolecular chemistry. 10(8)
Esters of proteinogenic amino acids efficiently catalyse the formation of erythrose and threose under potentially prebiotic conditions in the highest yields and enantioselectivities yet reported. Remarkably while esters of (L)-proline yield (L)-tetro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8dc1e749860bf87e398526b5a23c570d
https://pubmed.ncbi.nlm.nih.gov/22245755
https://pubmed.ncbi.nlm.nih.gov/22245755