Asked by mary
Help with the equation for the synthesis
2-chlorobutane from 1-butene and hydrogen chloride
for bromobenzene from benzene and bromine I came up with 1C6H6+1Br2->1C5H6Br+1HBr is this correct?
2-chlorobutane from 1-butene and hydrogen chloride
for bromobenzene from benzene and bromine I came up with 1C6H6+1Br2->1C5H6Br+1HBr is this correct?
Answers
Answered by
Dr Russ
2-chlorobutane from 1-butene and hydrogen chloride
CH2=CH-CH2CH3 + HCl ->
CH3-CH(Cl)-CH2-CH3
which is a straightforward addition reaction. Do you need to include conditions?
for bromobenzene from benzene and bromine I came up with 1C6H6+1Br2->1C5H6Br+1HBr is this correct?
Try (notice it is C6 not C5 and the prefix 1 are not needed).
C6H6+Br2->C6H5Br+HBr
which is a substitution reaction.
However, whilst the butene reaction will go in the cold (simply by bubbling HBr into a solution of the butene in a solvent, or even neat) the benzene one requires a Lewis acid catalyst such as FeBr3 to make it work.
CH2=CH-CH2CH3 + HCl ->
CH3-CH(Cl)-CH2-CH3
which is a straightforward addition reaction. Do you need to include conditions?
for bromobenzene from benzene and bromine I came up with 1C6H6+1Br2->1C5H6Br+1HBr is this correct?
Try (notice it is C6 not C5 and the prefix 1 are not needed).
C6H6+Br2->C6H5Br+HBr
which is a substitution reaction.
However, whilst the butene reaction will go in the cold (simply by bubbling HBr into a solution of the butene in a solvent, or even neat) the benzene one requires a Lewis acid catalyst such as FeBr3 to make it work.
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