专利名称：Ephedrine and pseudoephedrine precursors发明人：Karl E. Koenig申请号：US06/078111申请日：19790924公开号：US04277420A公开日：19810707
摘要：Preparation of novel prochiral olefinic compounds which can be asymmetricallyhydrogenated to enantiomers, which are converted to ephedrine and pseudoephedrineby described procedures.
申请人：MONSANTO COMPANY
代理人：Joseph D. Kennedy,James W. Williams, Jr.
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