The Nobel Prize in Chemistry 2001 The work of Professor William S. Knowles, Professor Ryoji Noyori and Professor K. Barry Sharpless presented by Professor Per Ahlberg, Member, The Royal Swedish Academy of Sciences, Member, The Nobel Committee for Chemistry Prize citation for Profs. W.S. Knowles and R. Noyori: "for their work on chirally catalyzed hydrogenation react..