| 摘要 |
NEW MATERIAL:A pyrrolidine compound shown by the formula I (R<1> is H, or t.butoxycarbonyl group). EXAMPLE:(2S,4S)-4-Diphenylphosphino-2-diphenylphosphinomethyl-pyrrolid ine. USE:An asymmetric reducing reagent. Capable of being synthesized simply, capable of preparing an optically active alanine compound in high yield. PREPARATION:A compound shown by the formula II (R<2> is tosyl group) is reacted with sodium diphenylphosphine to prepare a compound shown by the formula III, and this compound is catalytically treated with a strongly acidic substance.
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