15526 $C{H}_{3}MgBr+$ $[Figure]$   $\stackrel{H_3{O}^{+}}{\to }A\stackrel{HBr}{\to }$$B\stackrel{Mg/ether}{\to }C\underset{H_3{O}^{+}}{\stackrel{HCHO}{\to }}$$D\stackrel{HI}{\to }E$$E$ is

1

2

3

4

15528 Major product is

1

2

3

4

15530 $\underset{\mathrm{\Delta }}{\stackrel{I_2/NaOH}{\to }}\stackrel{H^{+}}{\to }\stackrel{\mathrm{\Delta }}{\to }A,$$A$ is

1

2

3

4

15526 $C{H}_{3}MgBr+$ $[Figure]$   $\stackrel{H_3{O}^{+}}{\to }A\stackrel{HBr}{\to }$$B\stackrel{Mg/ether}{\to }C\underset{H_3{O}^{+}}{\stackrel{HCHO}{\to }}$$D\stackrel{HI}{\to }E$$E$ is

1

2

3

4

15528 Major product is

1

2

3

4

15529 Product Obtained is :

15530 $\underset{\mathrm{\Delta }}{\stackrel{I_2/NaOH}{\to }}\stackrel{H^{+}}{\to }\stackrel{\mathrm{\Delta }}{\to }A,$$A$ is

1

2

3

4

15526 $C{H}_{3}MgBr+$ $[Figure]$   $\stackrel{H_3{O}^{+}}{\to }A\stackrel{HBr}{\to }$$B\stackrel{Mg/ether}{\to }C\underset{H_3{O}^{+}}{\stackrel{HCHO}{\to }}$$D\stackrel{HI}{\to }E$$E$ is

1

2

3

4

15528 Major product is

1

2

3

4

15529 Product Obtained is :

15530 $\underset{\mathrm{\Delta }}{\stackrel{I_2/NaOH}{\to }}\stackrel{H^{+}}{\to }\stackrel{\mathrm{\Delta }}{\to }A,$$A$ is

1

2

3

4

15526 $C{H}_{3}MgBr+$ $[Figure]$   $\stackrel{H_3{O}^{+}}{\to }A\stackrel{HBr}{\to }$$B\stackrel{Mg/ether}{\to }C\underset{H_3{O}^{+}}{\stackrel{HCHO}{\to }}$$D\stackrel{HI}{\to }E$$E$ is

1

2

3

4

15528 Major product is

1

2

3

4

15529 Product Obtained is :

15530 $\underset{\mathrm{\Delta }}{\stackrel{I_2/NaOH}{\to }}\stackrel{H^{+}}{\to }\stackrel{\mathrm{\Delta }}{\to }A,$$A$ is

1

2

3

4