(7)CHaCH2C CAg 9 (9)CH2 =CH- 一CH， CH,一CH=C-CH CH2CI -COOCH3 (10) COOCH 10.(1 CH CH-CH2-KMn,/HCH,COOH (2)CH:-C=CH+HBr (2mol) CH:CBr2CH; (3)CH-C=CHHBr(ml)CH C-CHCH,CBr.CH.Br Br 11.(CH3)CHCH-C=CH 12.(1)CH:CH-CH-CH-CHCH:(2)CH:CHBrCHBrCHBrCHBrCH: 13.(H3C)2C-CHCH2CH2-C=CHCH2CH2-C-CH-CH2 CHa 2