Question

1. Which reagent could be used in a Williamson Synthesis of cyclohexyl methyl ether?

H2SO4, NaCl, H2O, or NaH

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2.  Which carboxylic acid is the most acidic?

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3. A reaction that would give n-hexyllithium is:

              CH3CH2CH2CH2CH2Br + 2Li

              CH3CH2CH2CH2OH + Li

              CH3CH2CH2CH3 + Li

              CH3CH2CH2CH2Br + LiBr

              CH3CH2CH2CH3 = CH3Li

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4. Starting with p-bromoanisole, what sequence of reactions will produce p-methylanisole?

1. CH3l     2. Mg, ether

1. Mg, ether    2. CH3l

1. Br2, AlBr3    2. Mg, ether 3. CH3l

1. H2SO4, D   2. Mg, ether   3. CH3l

1. CH3l   2. Br2, AlBr3

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5. Identify the products from the following reaction:

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7. Which of the following amines is/are secondary amines?

otf Se OH faiuns rcacton the praducts from the o2onolysis C. NH2

Answer 1

Ans 1 : NaH

The ether synthesis takes place in two steps. First the alcohol is deprotonated using a strong base like NaH forming alkoxide.

Then in the second step it reacts with alkyl halide to form its corresponding ether.