Suggest a synthesis for olivetol from benzene and any necessary organic and/or inorganic reagents.

Olivetol is 5-Pentyl-1,3-benzenediol

You have two choices really. Do you put the C-5 chain (or something you can turn into the C-5 chain) on first then the phenol groups, or
phenol groups first, then the C-5 chain (or something you can turn into the C-5 chain).

To decide you need to think about the raction needed to put on the OH groups and the directing power of group(s) already in place
AND
what reaction is needed to put on a C-5 chain or its precursor and the directing power of OH groups.

Thinking of using Benzene with HNO3/H2SO4 to make Benzene with NO2 then adding Sn/Hcl/NaOH to make Benzene with NH2 then adding NaNO2/HCl/ (2) H20 to make Benzene with benzene with OH attaching at the 1, 3 position. what do you think?

Thinking of using Benzene with HNO3/H2SO4 to make Benzene with NO2 then adding Sn/Hcl/NaOH to make Benzene with NH2 then adding NaNO2/HCl/ (2) H20 to make Benzene with benzene with OH attaching at the 1, 3 position. what do you think?

I am thinking of putting the C-5 Group on last

To synthesize olivetol from benzene, you need to follow a specific set of reactions. Here is a step-by-step procedure for synthesizing olivetol:

Step 1: Conversion of benzene to phenol
Start by converting benzene to phenol. This can be achieved by treating benzene with a mixture of nitric acid (HNO3) and sulfuric acid (H2SO4) in the presence of heat.

Reaction: Benzene + Nitric Acid + Sulfuric Acid → Phenol + Water

Step 2: Conversion of phenol to p-hydroxybenzaldehyde
Next, you need to convert phenol to p-hydroxybenzaldehyde. This can be done by using sodium hypochlorite (NaOCl) or chlorine (Cl2) in the presence of a base such as sodium hydroxide (NaOH).

Reaction: Phenol + Sodium Hypochlorite → p-Hydroxybenzaldehyde

Step 3: Conversion of p-hydroxybenzaldehyde to 1,3-dihydroxybenzene (resorcinol)
In this step, p-hydroxybenzaldehyde is converted to resorcinol by reducing it with a suitable reducing agent, such as sodium borohydride (NaBH4) or other reducing agents like Raney Nickel.

Reaction: p-Hydroxybenzaldehyde + Sodium Borohydride → 1,3-Dihydroxybenzene (Resorcinol)

Step 4: Conversion of resorcinol to olivetol
Finally, resorcinol can be converted to olivetol by reacting it with acetic anhydride (Ac2O) in the presence of a catalyst, typically sulfuric acid (H2SO4).

Reaction: Resorcinol + Acetic Anhydride → Olivetol + Acetic Acid

By following these steps, you can synthesize olivetol from benzene using the necessary organic and inorganic reagents. Please note that this synthesis pathway may have specific reaction conditions and precautions that need to be followed for optimal yields and safety.