Starting with 2-methylpropane outline a synthesis of each of the following?

Question

1)isobutyl bromide
2)isobutyl alcohol
3)t-butyl alcohol
4)isobutyl methyl ether
5)2,2,3,3-tetramethylbutane
6)2-methylpropene

Answer 1

1) Treat with Br2, then alc. KOH, then HBr in presence of peroxides.

2) treat the above with aq. KOH

3) Treat with Br2 and then aq. KOH

4) Treat the above with CH3Br in presence of NaNH2

5) Treat 3 with Zn

6) Treat 1 with alc. KOH