作者bluemagpie (贞心相廷)
看板Chemistry
标题请教有机化学问题
时间Tue May 24 21:03:07 2011
1、which of the following is a meso compound?
(A)trans-1,4-dimethylcyclohexane
(B)cis-1,3- dimethylcyclohexane
(C)trans-1,3- dimethylcyclohexane
(D)cis-1,4-dimethylcyclohexane
(E)trans-1,2- dimethylcyclohexane
答案是 B
那请问A和D为什麽错呢?
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 122.118.189.70
1F:→ nagisanoff:查清楚定义 就会知道 05/24 21:11
2F:→ bluemagpie:因为不了解所以才想请教 05/25 02:09
3F:→ nagisanoff:meso compounds-->achiral compounds with asymmetric 05/25 02:49
4F:→ nagisanoff:centers. (A)&(D)没有asymmetric centers 05/25 02:50
5F:推 jasonfghx:你结构有画出吗???????????? 05/25 13:07