四炔烃的加氢和还原 H2/Ni,or Pd,or Pt RCH2CH2R' 出rS8m>c-cen心 R-C=C-R' 硼氢化，RCOOH ~00C,R (90%) Na,NH3 ,(82%) NH,T四）一C-c<R R四 炔烃的加氢和还原 R-CC-R’ H2 /Ni, or Pd, or Pt RCH2CH2R’ H2 / Pd-CaCO3 /Lindlar Pd or Pd-CaSO4 orNiB R' R H H C C R' H R H C C 硼氢化 RCOOH ~0oC R' H R H C C Na, NH3 R' R H H C C LiAlH4 (THF) (>90%) (90%) (82%)