多氟烯烃和炔烃的钯催化氢化

Catalytic Hydrogenation of Polyfluoro-alkene and -alkyne by Pd/Al_2O_3

本文报道Pd/Al2O3（1%）催化剂催化氢化CF3CCl=CClCF3,CF3CCI==CHCF3和CF3C=CCF3等多氟烯烃和炔烃的结果。经1H和（19）F核磁共振、质谱、红外等分析,证明了用制备色谱分离后的氢化产物主要成份的结构。前二者的氢化产物中主要是CF3CH2CH2CF3和CF3CH2CHClCF3的混合物,而CF3C=CCF3氢化后只生成CF3CH2CH2CF3。

This paper deals with the catalytic hydrogenation of CF_3CC1=CC1CF_3,CF_3CC1=CHCF_3 and CF_3C=CCF_3by Pd/Al_2O_3.The hydrogenated products separated bypreparative gas chromatography were identified by MS,IR and NMR.It was found thatthe first two compounds gave a mixture of CF_3CH_2CH_2CF_3 and CF_3CH_2CHC1CF_3,whilethe last compound gave CF_3CH_2CH_2CF_3.