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烯烃的同分异构现象

烯烃的同分异构现象. 孙默 丽泽中学 高二化学 2013.8.29. 1827 李比希 1828 维勒 1830 贝采里乌斯. 氰酸（ HNCO ） 雷酸（ HCNO ）. 同分异性→同分异构. 同分异构体的书写顺序. ⑴ 计算不饱和度 ⑵确定类别，写出异构 ⑶按每类写出碳链异构 ⑷在相同碳链中，找位置异构. a b. a a. ∕. ∕. ﹨. ﹨. C = C. C = C. ﹨. ﹨. ∕. ∕. b a. b b.

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烯烃的同分异构现象

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  1. 烯烃的同分异构现象 孙默 丽泽中学 高二化学 2013.8.29

  2. 1827李比希 1828维勒 1830贝采里乌斯 氰酸（HNCO） 雷酸（HCNO） 同分异性→同分异构

  3. 同分异构体的书写顺序 • ⑴计算不饱和度 • ⑵确定类别，写出异构 • ⑶按每类写出碳链异构 • ⑷在相同碳链中，找位置异构

  4. a b a a ∕ ∕ ﹨ ﹨ C = C C = C ﹨ ﹨ ∕ ∕ b a b b 当每个双键碳两端所连接的基团是a、b时，请你写出用a、b表示的顺反异构： 顺式 反式

  5. 顺反异构的性质差异 顺巴豆酸味辛竦， 而反巴豆酸味甜； 顺丁烯二酸有毒， 而反丁烯二酸无毒；

  6. 橡胶 弹性好 弹性差

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