Grignard Synthesis

Q. In the given reaction
$C_6{H}_5-\stackrel{O}{\stackrel{||}{C}}-\stackrel{O}{\stackrel{||}{C}}-C_6{H}_5\frac{\left(i\right)C{H}_{3}MgBr\left(excess\right)}{\left(iii\right)HOH/H^{@}}Product$

Product will be:

$\left(a\right)C_6{H}_{5}C-\stackrel{OH}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-\stackrel{OH}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-C_6{H}_5$

$\left(b\right)C_6{H}_{5}C-\stackrel{OH}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-\stackrel{O}{\stackrel{|}{C}}-C_6{H}_5$
$\left(c\right)C_6{H}_5-COOH$
$\left(d\right)C_6{H}_5-CHOH-CHOH-C_6{H}_5$

1. a
2. b
3. d
4. c

Q.

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

1. Dimethyl ether

2. Acetaldehyde

3. Ethyl acetate

4. Acetone

Q.

The product P in the reaction is:

1. 

2. 

3. 

4. 

Q.

Which of the following sequence of reactions would
convert tertiary butyl alcohol into 3, 3-dimethylbutan-1-ol?

1. 1: HBr followed by Mg in Ether; 2: Oxirane 3: $H_3{O}^{+}$
2. 1: HBr followed by Mg in Ether; 2: dioxane 3: $H_3{O}^{+}$
3. 1: $B{r}_2$ followed by Mg in Ether; 2: Oxirane 3: $H_3{O}^{+}$
4. None of the above

Q. Which of these methods would serve to prepare 1-Phenyl-2-propanol?
$\begin{array}{cc}\text{a.}& \text{Addition of benzyl Grignard reagent to acetaldehyde (ethanal)},\\ & \text{followed by hydrolysis.}\\ \text{b.}& \text{Addition of phenyl lithium to propylene oxide (methyloxirane)},\\ & \text{followed by hydrolysis.}\\ \text{c.}& \text{Addition of phenyl Grignard reagent to acetone (2- propanone)}\\ & \text{followed by hydrolysis.}\\ \text{d.}& \text{Acid- catalysed hydration (addition of water to) of 2-Phenyl-1-}\\ & \text{propene.}\\ \text{e.}& \text{Addition of methyl Grignard reagent to acetophenone (methyl phenyl}\\ & \text{ketone), followed by hydrolysis.}\\ \text{f.}& \text{Addition of methyl Grignard reagent to phenylacetaldehyde, followed}\\ & \text{by hydrolysis.}\end{array}$

1. $a,b,c,d,e,f$
2. $a,b,f$
3. $c,d,e$
4. $a,b,c,f$

Q. In the following reactions:

The major compound Y is:

1. 
   
2. 
3. 
4. 

Q. Which of these methods would serve to prepare 1-Phenyl-2-propanol?
$\begin{array}{cc}\text{a.}& \text{Addition of benzyl Grignard reagent to acetaldehyde (ethanal)},\\ & \text{followed by hydrolysis.}\\ \text{b.}& \text{Addition of phenyl lithium to propylene oxide (methyloxirane)},\\ & \text{followed by hydrolysis.}\\ \text{c.}& \text{Addition of phenyl Grignard reagent to acetone (2- propanone)}\\ & \text{followed by hydrolysis.}\\ \text{d.}& \text{Acid- catalysed hydration (addition of water to) of 2-Phenyl-1-}\\ & \text{propene.}\\ \text{e.}& \text{Addition of methyl Grignard reagent to acetophenone (methyl phenyl}\\ & \text{ketone), followed by hydrolysis.}\\ \text{f.}& \text{Addition of methyl Grignard reagent to phenylacetaldehyde, followed}\\ & \text{by hydrolysis.}\end{array}$

1. $a,b,c,d,e,f$
2. $a,b,f$
3. $c,d,e$
4. $a,b,c,f$

Q. In the given reaction
$C_6{H}_5-\stackrel{O}{\stackrel{||}{C}}-\stackrel{O}{\stackrel{||}{C}}-C_6{H}_5\frac{\left(i\right)C{H}_{3}MgBr\left(excess\right)}{\left(iii\right)HOH/H^{@}}Product$

Product will be:

$\left(a\right)C_6{H}_{5}C-\stackrel{OH}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-\stackrel{OH}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-C_6{H}_5$

$\left(b\right)C_6{H}_{5}C-\stackrel{OH}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-\stackrel{O}{\stackrel{|}{C}}-C_6{H}_5$
$\left(c\right)C_6{H}_5-COOH$
$\left(d\right)C_6{H}_5-CHOH-CHOH-C_6{H}_5$

1. $a$
2. $b$
3. $c$
4. $d$

Q.

The product P in the reaction is:

1. 

2. 

3. 

4. 

Q. In the following reactions:

The major compound Y is:

1. 
2. 
   
3. 
4.