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- W1970781487 abstract "Two water-soluble phosphines, 3,7-diformyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane (1, DFPTA) and 1-pyridylmethyl-3,5-diaza-1-azonia-7-phosphatricyclo[3.3.1.1]decane bromide (2, [pymePTA]Br), have been respectively, prepared by reacting 1,3,5-triaza-7-phosphaadamantane (PTA) with formic anhydride and bromomethylpyridine. Compound 1 is only the second acyl derivative of PTA to be prepared while 2 is only the second derivative of PTA reported that contains an aromatic appendage. Both compounds were characterized by elemental analysis, FAB-MS, 1H, 13C, and 31P NMR spectroscopy, and single crystal X-ray diffraction. This analysis showed that the formamide groups of 1 were in an anti confirmation in solution but in a syn confirmation in the solid state. The solubilities of 1 and 2 were examined in common organic solvents and water. It was found that 1.1 M aqueous solutions of 1 could be prepared while 2.4 M solutions of 2 were produced. The greater solubility of 2 was likely due to its ionic nature." @default.
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- W1970781487 date "2007-09-01" @default.
- W1970781487 modified "2023-10-03" @default.
- W1970781487 title "Two new water-soluble derivatives of 1,3,5-triaza-7-phosphaadamantane (PTA): Synthesis, characterization, X-ray analysis and solubility studies of 3,7-diformyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane and 1-pyridylmethyl-3,5-diaza-1-azonia-7-phosphatricyclo[3.3.1.1]decane bromide" @default.
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- W1970781487 doi "https://doi.org/10.1016/j.poly.2007.05.003" @default.
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