Synthesis of (aminomethylene)bisphosphonic acid derivativesстатья
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Дата последнего поиска статьи во внешних источниках: 28 июня 2016 г.
Аннотация:The convenient methods for the synthesis of new trimethylsilyl esters of aminomethylenediphosphonic acids are elaborated. The new substituted N-formylaminomethylenediphosphonates are obtained via interaction of trimethylsilyl esters of methylenediphosphonic acids with a mixture of triethyl orthoformate and ethanol. Also boron trifluoride-diethyl etherate as effective catalyst is used for interaction of hydrochlorides of ethoxymethylene imines with diethyl trimethylsilyl phosphite. The corresponding aminomethylenediphosphonic acids are presented.