关键词: 还原反应, 加成反应, 锂试剂, 国家教委高等学校博士学科点专项科研基金, 钛羧酸盐, α-芳香族酮酸, α-羟基羧酸

For the first time a series of titanium salts of α-keto aromatic acids has been prepared to be attacked by RLi. In this system, however, Li reagents exhibit a new property unreported ever before: they reduce the keto-acids to the corresponding mandelic acids in some cases with good yields. Further studies find that RLi can also add to the keto-acids with varied ratioes of mole to those reduced by use of different titanates, α-keto acids and Li reagents.

Key words: REDUCTION REACTION, ADDITION REACTION, LITHIUM REAGENT