CHCOOH 6 R-C=C-R'+B2H6 CH3CH2 1)B2H6 CH3CH2C=C-CH3 2)CH3COOH 4.4.4金属炔化物的生成 RC=CH NaNH2 Tig.NHRC=CNa*NIs HC=CH 2Ag(NH3)2*>AgC=CAg 鉴别端基炔烃 HC=CH 2Cu(NH3)2"->CuC=CCu鉴别端基炔烃 6 R C C R' + B2H6 C C H R R' 3 2 B CH3 COOH C C R R' H H cis￾CH3CH2C C CH3 1) B2H6 2) CH3COOH C C CH3 H H CH3CH2 4.4.4 金属炔化物的生成 RC CH + NaNH2 lig.NH3 RC C - Na + + NH3 HC CH + 2Ag(NH3) 2 + AgC CAg HC CH + 2Cu(NH3 ) 2 + CuC CCu