Two alkenes, X(91% yield) and Y(9% yield) are formed when the following compound is heated.

The structures of X and Y, respectively are:

1. 

2. 

3. 

4. 

In the dehydrohalogenation of 2-bromobutane; which conformation leads to the formation of cis-2-butene ?

(1)

(2)

(3)

(4)

End product (D) in the given sequence is:

$\begin{array}{ccccccc}{\mathrm{CH}}_3& -& \underset{\mathrm{Br}}{\underset{|}{\stackrel{\mathrm{Br}}{\stackrel{|}{\mathrm{C}}}}}& -& \stackrel{\mathrm{Br}}{\stackrel{|}{\underset{\mathrm{Br}}{\underset{|}{\mathrm{C}}}}}& -& {\mathrm{CH}}_3\end{array}$$\stackrel{{\mathrm{xNaNH}}_2}{\to }\stackrel{{\mathrm{yCH}}_3\mathrm{l}}{\to }$CH₃-C$\equiv \mathrm{C}-\mathrm{C}\equiv$C-CH₃

x and y mole consumed.

Value of x + y =

1. 5

2. 6

3. 7

4. 8

The major product obtained in the reaction of 1-phenyl-2-bromobutane with NaOMe is :

1. trans-1 -phenylbut-1-ene

2. cis-1-phenylbut-2-ene

3. 1-phenyl-2-ethoxybutane

4. cis-1-phenylbut-2-ene

Identify A:-

1.		2.
3.		4.

Ph-CH-CH2-CH2 →    Product
      l            l    Zn-Cu
     Br          Br     Δ

Product of the above reaction is:-
(1) Ph-CH=CH-CH₂-Br

(2) Ph-◁

(3) PH-CHBr-CH=CH₂

(4) Ph-C$\equiv$ C-CH₃

$\underset{\mathrm{EtOH},∆}{\overset{\mathrm{KOH}}{\to }}\underset{\left(major\right)}{\left(A\right)}$

Product (A) is:

1.

2.

3.

4.

Consider the following reaction,



The product is :

1. a primary amine

2. a tertiary amine

3. a secondary amine

4. a quaternary ammonium salt