An efficient procedure to deoxygenate hydroxy substituted flavonoids, isoflavonoids and related compounds via their trifluoromethanesulfonates is presented. Their reduction with formic acid in the presence of a catalytic amount of palladium acetate, triethylamine and 1,3-bis(diphenylphosphanyl) propane (dppp) in DMF results in their des-hydroxy derivatives without affecting other functional groups.
通过使用三氟甲磺酸盐,以催化量的乙酸钯、三乙胺和1,3-双(二苯基膦基)丙烷(dppp)在DMF中,将含羟基的黄酮类化合物、异黄酮类化合物及相关化合物脱氧的高效程序被提出。在甲酸存在下,它们的还原会导致它们的去羟基衍生物,而不影响其他功能团。