... theo qui tc isoprenoit: CH3-C=CH-CH2-CH2-C=CH-CH=O CH3 CH3 O - Hai ng phõn ca xitral l: ng phõn a (E )-3 ,7-imetylocta-2,6-ienal O ng phõn b (Z )-3 ,7-imetylocta-2,6-ienal a v b l hai ng phõn hỡnh ... THI CHN HC SINH GII QUC GIA LP 12 THPT NM 2011 P N THI CHNH THC Mụn: HO HC Ngy thi th hai: 12/ 01 /2011 (Gm 06 trang) Cõu 1 (2,25 im) a) - Cu to phõn t xitral tuõn theo qui tc isoprenoit: CH3-C=CH-CH2-CH2-C=CH-CH=O ... Metyl ioua, B: n-Butyl ioua, C: But-1-en, D: sec-Butanol, E: Axit propionic, F: sec-Butyl propionat, G: 2-Brombutan, H: sec-Butylmagie bromua, I: Etyl i-sec-butyl cacbinol Chỳ ý: Nu giai on to G...