The title compound (1) was treated with NaH at room temperature in anhydrous DMF to give a sodium salt (containing nitrogen anion) which could shift the methyl group from oxygen to nitrogen atom to form N-methyl phosp...The title compound (1) was treated with NaH at room temperature in anhydrous DMF to give a sodium salt (containing nitrogen anion) which could shift the methyl group from oxygen to nitrogen atom to form N-methyl phosphinic acid as the reaction temperature was increased to 120 ℃. Three nitro derivatives containing 5,10-dihydrophenophosphazine ring system were prepared for the investigation on the above reaction mechanism which would be possibly regarded as a special inter-molecular substitution, viz., the nucleophilic nitrogen anion from one molecule of 1 attacked the carbon atom of the O-methyl of another 1. In addition, the chemical structures of seven compounds containing 5,10-dihydrophenophos-phazine ring system involved in the experiment were confirmed by IR, 1H NMR, 31P NMR and mass spectroscopy.展开更多
基金ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .2 9972 0 0 6)
文摘The title compound (1) was treated with NaH at room temperature in anhydrous DMF to give a sodium salt (containing nitrogen anion) which could shift the methyl group from oxygen to nitrogen atom to form N-methyl phosphinic acid as the reaction temperature was increased to 120 ℃. Three nitro derivatives containing 5,10-dihydrophenophosphazine ring system were prepared for the investigation on the above reaction mechanism which would be possibly regarded as a special inter-molecular substitution, viz., the nucleophilic nitrogen anion from one molecule of 1 attacked the carbon atom of the O-methyl of another 1. In addition, the chemical structures of seven compounds containing 5,10-dihydrophenophos-phazine ring system involved in the experiment were confirmed by IR, 1H NMR, 31P NMR and mass spectroscopy.
