Diphosphoric acid, tetrabutyl ester → Phosphoric acid, dibutyl ester, potassium salt (1:1)
Reaktionsgleichung
[CH2:1]([O:5][P:6]([O:13]P(OCCCC)(OCCCC)=O)(=[O:12])[O:7][CH2:8][CH2:9][CH2:10][CH3:11])[CH2:2][CH2:3][CH3:4].C[Si](C)(C)[O-].[K+:31]>O1CCCC1>[CH2:8]([O:7][P:6]([O-:13])([O:5][CH2:1][CH2:2][CH2:3][CH3:4])=[O:12])[CH2:9][CH2:10][CH3:11].[K+:31]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
The procedure of Example 1 was followed using tetrabutylpyrophosphate (4 mL, 10.5 mmol) in dry tetrahydrofuran (10 mL), potassium trimethylsilanolate (2.68 g, 21 mmol) in dry tetrahydrofuran (50 mL), and a 24 h reaction time. The product, potassium dibutylphosphate (4.46 g, 90% yield), was isolated as a white solid by concentrating the filtrate under vacuum: 1H NMR (D2O, DSS) δ 0.8-1.05 (dist. t, CH3, 6H), 1.18-1.8 (m, CH2, 8H), 3.74-4.0 (q, CH2, 4H). Anal. Calcd. for C8H18KO4P: C, 38.70; H, 7.31. Found: C, 38.63; H, 7.38.