中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
7-羟基-2,2,8-三甲基-2,3-二氢-4H-苯并吡喃-4-酮 | 7-hydroxy-2,2,8-trimethyl-4-chromanone | 50544-72-4 | C12H14O3 | 206.241 |
—— | 7-Mercapto-2,2,8-trimethyl-chroman-4-one | 159151-27-6 | C12H14O2S | 222.308 |
—— | Dimethyl-thiocarbamic acid O-(2,2,8-trimethyl-4-oxo-chroman-7-yl) ester | 143260-21-3 | C15H19NO3S | 293.387 |
—— | Dimethyl-thiocarbamic acid S-(2,2,8-trimethyl-4-oxo-chroman-7-yl) ester | 143260-30-4 | C15H19NO3S | 293.387 |
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.