Synthetic applications of N–N linked heterocycles. Part 11. Regiospecific synthesis of dialkyl pyridin-4-yl-, quinolin-4-yl-, and isoquinolin-1-yl-phosphonates
作者:Alan R. Katritzky、James G. Keay、Michael P. Sammes
DOI:10.1039/p19810000668
日期:——
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。