Zobrazeno 1 - 10
of 178
pro vyhledávání: '"Gerhard, Hägele"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 12, Iss 1, Pp 1493-1502 (2016)
A practical method was elaborated for the synthesis of (aminomethylene)bisphosphine oxides comprising the catalyst- and solvent-free microwave-assisted three-component condensation of primary amines, triethyl orthoformate and two equivalents of diphe
Externí odkaz:
https://doaj.org/article/2d006108c2f84a4cb1dc61a1e7ab6c54
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 197:557-560
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a06ad74addc83e8d7635358aa1e3e47d
https://doi.org/10.1080/10426507.2021.2008927
https://doi.org/10.1080/10426507.2021.2008927
Autor:
Gerhard Hägele
Publikováno v:
Molecules, Vol 24, Iss 18, p 3238 (2019)
Phosphonic acids, aminophosphonic acids, and phosphonocarboxylic acids are characterized by an advanced hyphenated technique, combining potentiometric titration with NMR spectroscopy. Automated measurements involving 13C, 19F and 31P nuclei lead to
Externí odkaz:
https://doaj.org/article/2fe859a7d59a4d29a53970809cdbdbae
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 195:1013-1026
Four bisphosphinic acids RR´C[P(CH3)(O)OH]2 are characterized by 1H, 13C{1H}, and 31P{1H} NMR data. H3 C-P-C-P-CH3 skeletons give rise to [A3X]2 spin systems. Some algebraic equations are derived f...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9341d9fe8f0815cff24ce57d446557ad
https://doi.org/10.1080/10426507.2020.1798444
https://doi.org/10.1080/10426507.2020.1798444
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 195:830-835
The fully deprotonated anion of 1,3,5-benzene-triphosphonic acid 1,3,5-C6H3[PO32−]3 gives rise to deceptively simple 1H and 31P NMR spectra due to a corresponding [AX]3 spin system. The 13C{1H} NMR...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48d8fde9100cabdbb8e208d52df8637f
https://doi.org/10.1080/10426507.2020.1757675
https://doi.org/10.1080/10426507.2020.1757675
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 194:215-220
The reaction of 1-fluoro-2,4-dinitrobenzene with (3-amino-1-hydroxypropane-1,1-diyl)bis(phosphonic acid) (pamidronic acid) 1a in combination with NAOH leads to disodium (3-((2,4-dinitrophen...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c09dd1c0e7d32956992c4fbfc0f47d2
https://doi.org/10.1080/10426507.2018.1539490
https://doi.org/10.1080/10426507.2018.1539490
Autor:
Gerhard Hägele
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 194:361-363
1-Phosphonopropane-1,2,3-tricarboxylic acid (PPTC) was characterized by NMR controlled titrations. Specific dissociation constants pKi and specific chemical shifts δP [ppm] of protonation species HiLi-5 from diastereomers RS/SR and RR/SS of PPTC wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1581982bde65435efec0f84d2c766963
https://doi.org/10.1080/10426507.2018.1543304
https://doi.org/10.1080/10426507.2018.1543304
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 192:727-731
31P NMR chemical shifts and coupling constants of (Me3Si)3P7 in solution state reveal C3 symmetry which is consistent with a twisted molecular framework as found in solid state. The 31P{1H} NMR spectrum was iterated as a B[AC]3 system by automated li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bad67a5fef786ae7d49777d6c9cad774
https://doi.org/10.1080/10426507.2017.1287705
https://doi.org/10.1080/10426507.2017.1287705
Autor:
György Keglevich, Nader de Sousa Amadeu, Erika Bálint, Gerhard Hägele, Ádám Tajti, Christoph Janiak, Winfried Boenigk
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 192:643-650
(Amino-methylene)bisphosphonates R1R2N-CH[P(O)(OMe)2]2 bearing achiral and chiral substituents (R1 = Ph, R2 = H, Me; and R1 = PhCH(Me), R2 = Me, Bn) were synthesized and characterized in CDCl3 by 1...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73cfb8f8fd4284d7e7b81ec0a721617d
https://doi.org/10.1080/10426507.2017.1295966
https://doi.org/10.1080/10426507.2017.1295966
Publikováno v:
Tetrahedron Letters. 68:152902
A series of dialkyl 3-diethylphosphonoyl-2-hydroxy-prop-2-ylphosphonates and a diphenylphosphine oxide, new representatives within the large family of α-hydroxyphosphonates, were prepared via the Pudovik reaction of the corresponding dialkyl phosphi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49c6245a5bddac04d504b2401c96c827
https://doi.org/10.1016/j.tetlet.2021.152902
https://doi.org/10.1016/j.tetlet.2021.152902