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Grignard Synt...

Grignard Synthesis

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Q.

Is ${CO}_{2}$ an acid or a base?

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Q. In the given reaction
$C_{6} H_{5} - O | | C - O | | C - C_{6} H_{5} \frac{(i) C H_{3} M g B r (e x c e s s)}{(i i i) H O H / H^{@}} P r o d u c t$

Product will be:

$(a) C_{6} H_{5} C - O H | C | C H_{3} - O H | C | C H_{3} - C_{6} H_{5}$

$(b) C_{6} H_{5} C - O H | C | C H_{3} - O | C - C_{6} H_{5}$
$(c) C_{6} H_{5} - C O O H$
$(d) C_{6} H_{5} - C H O H - C H O H - C_{6} H_{5}$

$a$
$b$
$c$
$d$

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Q. Which of these methods would serve to prepare 1-Phenyl-2-propanol?

\begin{matrix} a. & Addition of benzyl Grignard reagent to acetaldehyde (ethanal), followed by hydrolysis. b. & Addition of phenyl lithium to propylene oxide (methyloxirane), followed by hydrolysis. c. & Addition of phenyl Grignard reagent to acetone (2- propanone) followed by hydrolysis. d. & Acid- catalysed hydration (addition of water to) of 2-Phenyl-1- propene. e. & Addition of methyl Grignard reagent to acetophenone (methyl phenyl ketone), followed by hydrolysis. f. & Addition of methyl Grignard reagent to phenylacetaldehyde, followed by hydrolysis. \end{matrix}

$a, b, c, d, e, f$
$a, b, f$
$c, d, e$
$a, b, c, f$

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Q. Which of these methods would serve to prepare 1-Phenyl-2-propanol?

\begin{matrix} a. & Addition of benzyl Grignard reagent to acetaldehyde (ethanal), followed by hydrolysis. b. & Addition of phenyl lithium to propylene oxide (methyloxirane), followed by hydrolysis. c. & Addition of phenyl Grignard reagent to acetone (2- propanone) followed by hydrolysis. d. & Acid- catalysed hydration (addition of water to) of 2-Phenyl-1- propene. e. & Addition of methyl Grignard reagent to acetophenone (methyl phenyl ketone), followed by hydrolysis. f. & Addition of methyl Grignard reagent to phenylacetaldehyde, followed by hydrolysis. \end{matrix}

$a, b, c, d, e, f$
$a, b, f$
$c, d, e$
$a, b, c, f$

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Q.

The product P in the reaction is:

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Q. In the following reactions:

The major compound Y is:

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Q. In the given reaction
$C_{6} H_{5} - O | | C - O | | C - C_{6} H_{5} \frac{(i) C H_{3} M g B r (e x c e s s)}{(i i i) H O H / H^{@}} P r o d u c t$

Product will be:

$(a) C_{6} H_{5} C - O H | C | C H_{3} - O H | C | C H_{3} - C_{6} H_{5}$

$(b) C_{6} H_{5} C - O H | C | C H_{3} - O | C - C_{6} H_{5}$
$(c) C_{6} H_{5} - C O O H$
$(d) C_{6} H_{5} - C H O H - C H O H - C_{6} H_{5}$

$a$
$b$
$c$
$d$

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Q. Which of these methods would serve to prepare 1-Phenyl-2-propanol?

\begin{matrix} a. & Addition of benzyl Grignard reagent to acetaldehyde (ethanal), followed by hydrolysis. b. & Addition of phenyl lithium to propylene oxide (methyloxirane), followed by hydrolysis. c. & Addition of phenyl Grignard reagent to acetone (2- propanone) followed by hydrolysis. d. & Acid- catalysed hydration (addition of water to) of 2-Phenyl-1- propene. e. & Addition of methyl Grignard reagent to acetophenone (methyl phenyl ketone), followed by hydrolysis. f. & Addition of methyl Grignard reagent to phenylacetaldehyde, followed by hydrolysis. \end{matrix}

$a, b, c, d, e, f$
$a, b, f$
$c, d, e$
$a, b, c, f$

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Q.

Which of the following compounds will not react with methyl magnesium bromide?

Ethyl acetate
Acetone
Dimethyl ether
Acetaldehyde

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Q. In the following reactions:

The major compound Y is:

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Q. In the given reaction
$C_{6} H_{5} - O | | C - O | | C - C_{6} H_{5} \frac{(i) C H_{3} M g B r (e x c e s s)}{(i i i) H O H / H^{@}} P r o d u c t$

Product will be:

$(a) C_{6} H_{5} C - O H | C | C H_{3} - O H | C | C H_{3} - C_{6} H_{5}$

$(b) C_{6} H_{5} C - O H | C | C H_{3} - O | C - C_{6} H_{5}$
$(c) C_{6} H_{5} - C O O H$
$(d) C_{6} H_{5} - C H O H - C H O H - C_{6} H_{5}$

$a$
$b$
$c$
$d$

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