Compusul se numeste 2-metil-2-butena.
Ea se poate obtine prin:
1) Reactii de aditie
a) CH2=C=C-CH3 + H2 -> CH3-CH=C-CH3
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CH3 CH3
Reactia decurge in prezenta Pd/Pb²⁺.
2) Reactii de eliminare:
OH
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a) CH3-CH2-C-CH3 -> CH3-CH=C-CH3 + H2O
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CH3 CH3
Reactia decurge in prezenta H2SO4.
X
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b) CH3-CH2-C-CH3 -> CH3-CH=C-CH3 + HX
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CH3 CH3
X reprezenta halogenii: Br si Cl.
Reactia are loc in prezenta NaOH (bazelor alcaline) in solutie de ROH (alcool).
c) CH3-CH2-CH-CH3 -> CH3-CH=C-CH3 + H2
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CH3 CH3
Reactia are loc la temperaturi mai mari de 650°C.
d) CH3-CH=C-CH2-COOH -> CH3-CH=C-CH3 + CO2
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CH3 CH3
Reactia de decarboxilare decurge la temperaturi mari si se elimina dioxidul de carbon din cadrul gruparii carboxil (-COOH).
3) Reactii de substitutie:
a) CH3-CH=C-CH2-MgCl + HOH -> CH3-CH=C-CH3 + HOMgCl
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CH3 CH3
