How are following compounds prepared using ethereal solution of diazomethane?
Write the mechanism of the reactions.
i) CH3CH2COOCH3
ii) CH3CH2OCH3
To prepare the following compounds using an ethereal solution of diazomethane, we will employ a process known as diazoalkane synthesis. Diazomethane (CH2N2) is a valuable reagent in organic chemistry for introducing methyl groups into various compounds. It can react with compounds containing acidic protons, like esters and ethers, to form the desired products. Here's the mechanism for each reaction:
i) CH3CH2COOCH3 (Methyl Ethyl Ketone)
Reaction: Diazomethane with Methyl Ethyl Ketone
Mechanism:
1. Generation of
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In the following pairs which of the carbocation is more stable and why?
i) NC – CH – CH2 +CH2 CH3 or NC - CH2 - +CH2 H2
sec. carbocation p – carbocation
ii) CH3 CH2 +CH - CH2 CH2 CH3 or CH3 (CH2)4 +CH2
sec. carbocation p – carbocation
Reaction of primary amine, in presence of an acid, with carbonyl compound
gives an imine. The rate of reaction increases by an increase in acidity but
beyond a certain limit, the rate decreases with further increase of acidity.
Write the product and indicate the type of reaction that is taking place in the following:
Write the main product of the following reactions giving reasons for your answer.
Arrange the following in the increasing order of electrophilic substitution. Justify your answer.
How are following compounds prepared using ethereal solution of diazomethane?
Write the mechanism of the reactions.
i) CH3CH2COOCH3
ii) CH3CH2OCH3
In Wittig reaction, the methyl, primary and secondary alkyl halide can be used to
prepare Wittig reagent (ylide) but not tertiary alkyl halide.