7 (2)H3C、 CH2CH2 CH3 (3)CHCH2C≡CNa (4)CH2CH2C≡ CMgBr CH3CH2C≡ccHz2CH3 CH3CH2C≡CCH3 PhCH2ECH (1) 1)AgNO3, NH3, H2O (2) i)AgNO3, EtOH 11) Nal-CH3 COCH3 (3) 1)AgNO3, NH3, H2O 11) Br2, CCl47. (1) (2) H3CH HCH2CH2CH3 (3) CH3CH2C CNa , CH3CH2C CCH2CH3 (4) CH3CH2C CMgBr , CH3CH2C CCH3 (5) PhCH2C CH 8. (1) (2) (3) O OO i) AgNO3, NH3,H2O ii) i) AgNO3, EtOH ii) NaI-CH3COCH3 i) AgNO3, NH3,H2O ii) Br2, CCl4