(1):

1, `CH_2Cl-CH_2-CH_3`

2, `CH_3-CHCl-CH_3`

`\to` 2 dẫn xuất

(2): 

1, `CH_2Cl-CH_2-CH_2-CH_3`

2, `CH_3-CHCl-CH_2-CH_3`

`\to` 2 dẫn xuất

(3):

1, `CH_2Cl-CH_2-CH_2-CH_2-CH_3`

2, `CH_3-CHCl-CH_2-CH_2-CH_3`

3, `CH_3-CH_2-CHCl-CH_2-CH_3`

`\to` 3 dẫn xuất

(4):

1, `CH_2Cl-CH(CH_3)-CH_2-CH_3`

2, `CH_3-C Cl(CH_3)-CH_2-CH_3`

3, `CH_3-CH(CH_3)-CHCl-CH_3`

4, `CH_3-CH(CH_3)-CH_2-CH_2Cl`

`\to` 4 dẫn xuất