9.如何完成下列转变。 (1)CH3 CHBrCH3-CH3 CH2 CH2 Br CH CH3 CH, C(CH3) CH3 CH,C=CH2 OCH CH 3 (3) CH3 CH2C-CH2 CH3, CHCH, OCH3 (4) HOCH2 CH, CH,CH=CH CHaI (6) 10.指出如何用红外光谱来区分下列各对异构体 HcA H与HC—C≡C—CH2OH 与 N—c=CH29. 如何完成下列转变。 (1) CH3CHBrCH3 CH3CH2CH2Br (2) CH3CH2C CH2 CH3 CH3CH2C(CH3 )2 OCH3 (3) CH3CH2C CH2 CH3 CH3CH2CHCH2OCH3 CH3 (4) O (5) Br Br OH (6) HOCH2CH2CH2CH CH2 O CH2I 10．指出如何用红外光谱来区分下列各对异构体。 (1) H3C C H C H C O H 与 H3C C C CH2OH (2) Ph Ph 与 Ph Ph (3) C O CH3 与 C CH3 O (4) C 与 H2 C (5) C Ph Ph C C CN CH3 与 C Ph Ph C N C H CH2