The cleavage of 1-amino-2′-nitrobenzylphosphonates in a basic medium. Formation of the 3-amino-2,1-benzisoxazole derivatives
作者:Bogdan Boduszek、Agnieszka Halama、Jerzy Zoń
DOI:10.1016/s0040-4020(97)00721-7
日期:1997.8
bond cleavage, with formation of 3-amino-2,1-benzisoxazole derivatives (3). The leaving phosphorus moiety was identified here as phosphoric acid. In the case of basic hydrolysis of corresponding esters, new cyclic phosphorus compounds (derivatives of benzoxazaphosphorin-3,1,2 Pv-one-2) were obtained. The cyclic products were formed as a result of the subsequent reaction of anthranil derivatives with
用氢氧化钠水溶液处理1-氨基-2'-硝基苄基膦酸引起CP键断裂,形成3-氨基-2,1-苯并恶唑衍生物(3)。此处将剩下的磷部分鉴定为磷酸。在相应的酯,(的benzoxazaphosphorin-3,1,2 P衍生物新的环状磷化合物的碱性水解的情况下,v -酮2)获得。蒽衍生物与剩余的磷片段(可能是偏磷酸盐)发生随后反应的结果是形成了环状产物。借助于盐酸水溶液将这些苯并氮杂磷鎓(化合物4)转化为3-氨基-2,1-苯并恶唑衍生物。