高考问答举重晕倒视频:2－甲基－1，3－丁二烯的化学结构简式怎么写？
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2－甲基－1，3－丁二烯的化学结构简式怎么写？
CH2=C-CH=CH2 CH2=C-CH-CH2
| |
CH3 CH3
(A) (B)
A对还是B对？
`
CH2=C-CH=CH2 ````CH2=C-CH-CH2
````````|````````````````````````|
```````CH3`````````````````````CH3
``(a)``````````````````(b)
CH2=C-CH=CH2 CH2=C-CH-CH2
| |
CH3 CH3
(A) (B)
A对还是B对？
`
CH2=C-CH=CH2 ````CH2=C-CH-CH2
````````|````````````````````````|
```````CH3`````````````````````CH3
``(a)``````````````````(b)
A对~因为~是丁二烯所以有俩个CC双键
并在第一个和第三个C后面~切在第2个C上还有个甲基
所以A对
A对
CH2=C-CH=CH2
|
CH3