How are alkenes obtained?
1 Answer
Apr 30, 2016
Alkenes are obtained by elimination reactions
Explanation:
Alkenes are obtained by elimination reactions Following are some examples.
- Dehydration of Alcohol
In this process alcohol is dehydrated
(1) byheating with conc.H_2SO4 at 450KH2SO4at450K or byP_2O_5P2O5
or (2) by passing alcohol vapor over heated Alumina,Al_2O_3Al2O3
Reaction
- Dehydrohalogenation
In this process Alkyl halide except fluoride is reacted with alcoholicKOHKOH
Reaction
RCH_2CH_2X->RCH=CH_2+ HXRCH2CH2X→RCH=CH2+HX (where X =Cl,Br,I)
- Dehalogenation
In this process vicinal or geminal dihalide except fluoride is heated with alcoholic
Reaction
Other process like cracking of alkane is also there