Question

Reacții la următoarele:

1. 1,3- butadiena+ hidrogen
2. propina+ sodiu metalic
3. propina+ brom
4. propena+ K2Cr2O7/ mediu acid
5. polimerizarea 1- butenei

Answer 1

1. CH2=CH-CH=CH2+H2 ⇒ CH3-CH=CH-CH3

2. HC≡C-CH3 + Na ⇒ HC≡HNa + 1/2 H2

3. HC≡C-CH3 + HC(Br)=C(Br)-CH3

4. 3CH2=CH-CH3 + 5K2Cr2O7 + 20H2SO4 ⇒ 3CO2 + 3CH3-COOH + 5K2SO4 + 5Cr2(SO4)3 + 23H2O

5. nCH2=CH-CH2-CH3 ⇒ (CH2-CH-CH2-CH3)n