Stereoselective syntheses of co-ordinated phosphines: stereospecific generation and alkylation of the tertiary phosphido–metal group in (R*,R*)-[(η5-C5H5){1,2- C6H4(PMePh)2}FePMePh] at –90 °C
摘要:
[(R*,R*),(R*)]-[(β5-C5H5){1,2-C6H4(PMePh)2}FePHMePh]PF6(1) 与 KO 的去质子化但低于 90 °C,然后在相同温度下用碘乙烷处理中间体叔磷基金属络合物,生成 [(R*,R*),(S*)]-[(η5-C5H5){1,2 -C6H4(PMePh)2}FePEtMePh]PF6 非对映异构体过量 >99%。