BrCH<sub>2</sub>CH<sub>2</sub>CN
A、用简便合理的方法除去下列化合物中的少量杂质。
B、(1)苯中少量的噻吩
C、(2)甲苯中少量的吡啶
D、(3)吡啶中少量的六氢吡啶
A、用简便合理的方法除去下列化合物中的少量杂质。
B、(1)苯中少量的噻吩
C、(2)甲苯中少量的吡啶
D、(3)吡啶中少量的六氢吡啶
A、BrCH<sub>2sub>-CHCl-CH<sub>2sub>Br B、ClCH<sub>2sub>-CHBr-CH<sub>3sub> C、CH<sub>3sub>-CH(CH<sub>3sub>)-CH<sub>3sub> D、CH<sub>3sub>CH<sub>2sub>CH<sub>2sub>CH<sub>2sub>CH<sub>3sub>
A、CH<sub>2sub>=CHCH<sub>2sub>Br B、CH<sub>3sub>CH=CHBr C、BrCH<sub>2sub>CH=CHCH<sub>3sub> D、CH<sub>2sub>=CHBr
A、C<sub>6sub>H<sub>5sub>CH<sub>2sub>CO<sub>2sub>H B、CH<sub>3sub>CH<sub>2sub>CO<sub>2sub>H C、BrCH<sub>2sub>CH<sub>2sub>CO<sub>2sub>H D、C<sub>1sub>CH<sub>2sub>CH<sub>2sub>CO<sub>2sub>H
A、CH<sub>4sub>+2S<sub>2sub>→CS<sub>2sub>+H<sub>2sub>S B、CH<sub>4sub>+2S<sub>2sub>→CS<sub>2sub>+2H<sub>2sub>S C、CH<sub>4sub>+S<sub>2sub>→CS<sub>2sub>+2H<sub>2sub> D、CH<sub>4sub>+3S<sub>2sub>→CS<sub>2sub>+4H<sub>2sub>S
A、CH<sub>4sub>、H<sub>2sub>; B、CO<sub>2sub>、CH<sub>4sub>; C、CO<sub>2sub>、H<sub>2sub>S; D、CH<sub>4sub>、H<sub>2sub>S。
A、A.(CH<sub>3sub>)<sub>2sub>CHCOOC<sub>2sub>H<sub>5sub>
B.CH<sub>3sub>CH<sub>2sub>CH<sub>2sub>COOCH<sub>3sub>
C.CH<sub>3sub>CH<sub>2sub>COOCH<sub>2sub>CH<sub>2sub>CH<sub>3sub>
D.CH<sub>3sub>CH<sub>2sub>CH<sub>2sub>COOCH<sub>2sub>CH<sub>2sub>CH<sub>3sub>
A、CH<sub>3sub>CH=C=CHCH<sub>3sub> B、CH<sub>3sub>CH=CH(CH<sub>2sub>)<sub>3sub>CH=CH<sub>2sub> C、CH<sub>2sub>=CH-CH=C(CH<sub>3sub>)–C<sub>2sub>H<sub>5sub> D、CH<sub>2sub>=CHCH<sub>2sub>CH(C<sub>2sub>H<sub>5sub>)CH<sub>2sub>CH=CH<sub>2sub>
A、CH<sub>3sub>CH(CH<sub>3sub>)CH(Cl)CH<sub>3sub> B、(CH<sub>3sub>)<sub>3sub>CH(Cl)CH<sub>2sub>CH<sub>3sub> C、CH<sub>3sub>CH(Cl)CH<sub>2sub>CH<sub>3sub> D、CH<sub>3sub>CH<sub>2sub>CH(CH<sub>3sub>)CH<sub>2sub>Cl
A、CH<sub>3sub>CH=C=CHCH<sub>3sub> B、CH<sub>3sub>CH=CHCH=CH<sub>2sub> C、CH<sub>2sub>=CH-CH=C(CH<sub>3sub>)–C<sub>2sub>H<sub>5sub> D、CH<sub>2sub>=CHCH<sub>2sub>CH(C<sub>2sub>H<sub>5sub>)CH<sub>2sub>CH=CH<sub>2sub>
A、(CH<sub>3sub>)<sub>3sub>CCH<sub>2sub>Br B、CH<sub>3sub>CH(CH<sub>3sub>)CH(CH<sub>3sub>)CH<sub>2sub>Cl C、CH<sub>3sub>CH<sub>2sub>CH(Br)CH<sub>3sub> D、CH<sub>3sub>CH<sub>2sub>CH(CH<sub>3sub>)CH<sub>2sub>(Cl)