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Beilstein J. Org. Chem. 2024, 20, 1623–1634, doi:10.3762/bjoc.20.145
Graphical Abstract
Figure 1: General synthesis of triazinephosphonate compounds.
Scheme 1: Synthesis of diethyl phenylphosphonates 2, 4 and 6.
Scheme 2: Synthesis of (4-hydroxyphenyl)methylphosphonate 7 starting from [4-(benzyloxy)phenyl]methanol (8).
Scheme 3: Synthesis of diethyl [hydroxy(4-hydroxyphenyl)methyl]phosphonate (11) and tetraethyl [(4-hydroxyphe...
Scheme 4: Synthesis of diethyl phenylphosphonates 16 and 14.
Scheme 5: Synthesis of 4-aminophenyltriazinephosphonate derivatives TP1–TP3.
Figure 2: Partial view of 1H and 31P NMR spectra of 4-aminophenyltriazinephosphonate derivatives TP1–TP3.
Scheme 6: Synthesis of (4-hydroxyphenyl)triazinephosphonate derivatives TP4–TP6.
Figure 3: Partial view of 1H and 31P NMR spectra of (4-hydroxyphenyl)triazinephosphonate derivatives TP4–TP6.
Scheme 7: Attempted synthesis of triazinephosphonate TP7.
Figure 4: Preparation of the new doped membranes.
Figure 5: Comparison of in-plane proton conductivity vs RH of Nafion doped membranes, at 60 °C.