show the route you would use to go from starting material to product. You should give the reaction conditions for each step, but it is not necessary to give detailed mechanisms.

RCH2CH2R to R-CH(BR is attached under CH)-CH3

RCH2-C-(3 CH3 is attached to this C)

to R-C(1 H and 1 OH are attached to this C) - C (1 H and 1 CH3 are attached to this C) - CH3

To go from the starting material RCH2CH2R to the product R-CH(Br is attached under CH)-CH3, the following steps can be taken:

Step 1: Oxidation
Starting material: RCH2CH2R
Product: RCH2-C-(3 CH3 is attached to this C)
Reaction conditions: Use an oxidizing agent, such as potassium permanganate (KMnO4) or Jones reagent. The reaction is typically carried out in acidic or alkaline conditions.

Step 2: Bromination
Starting material: RCH2-C-(3 CH3 is attached to this C)
Product: R-C(1 H and 1 OH are attached to this C) - C (1 H and 1 CH3 are attached to this C) - CH3
Reaction conditions: Use a brominating reagent, such as bromine (Br2) or N-bromosuccinimide (NBS), in the presence of a solvent like dichloromethane (CH2Cl2) or carbon tetrachloride (CCl4).

Please note that while the reactions and conditions have been provided for each step, it's always important to consider other factors such as reaction temperature, stoichiometry, and any specific catalysts that might be required in order to achieve the desired transformations.