论文部分内容阅读
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.
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 ° C. Three nitro derivatives containing 5,10-dihydrophenophosphazine ring system were prepared for the investigation on the above reaction mechanism which would be considered 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.