(3)醛、酮与炔化钠的加成 R.C=CNa+>C-0N液C C=CR ,0C C=CR 或乙醚 ONa OH NaNH, 炔醇 (-NH3) R-C=CH OH CH3 CH3 (CH)C-C-CRCH-C-C-CR H2/催 CH2=C-CH=CHR 制备共轭双烯 (3)醛、酮与炔化钠的加成 R-CC-Na+ + C=O C OH C CR C ONa C CR NH3 (液) 或乙醚 H2O NaNH2 (-NH3) R-CCH (CH3 )2C-C CR H+ OH CH2=C-CCR CH3 H2 / 催 CH2=C-CH=CHR CH3 制备共轭双烯 炔醇