1-yl)-pyridinium, -quinolinium, and -isoquinolinium salts with trialkyl phosphites in the presence of sodium iodide gives regiospecifically dihydro-intermediates, which may be decomposed in good yields to dialkyl pyridin-4-yl-, quinolin-4-yl-, and isoquinolin-1-yl-phosphonates respectively. The reaction may also be carried out in one step without isolating the dihydro-intermediate.
在
碘化钠存在下用
亚磷酸三烷基酯处理N-(2,6-二甲基-4-氧杂
吡啶-1-基)-
吡啶鎓,-
喹啉鎓和-
异喹啉鎓盐可生成区域特异性的二氢中间体,可将其分解分别得到
吡啶基-4-基-,
喹啉-4-基和
异喹啉-1-基-
膦酸二烷基酯。该反应也可以在不分离二氢中间体的情况下一步进行。