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Synthetic Routes - OCR A Level Chemistry

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Last updated: June 17, 2023
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First submittedJune 17, 2023
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1. What reagents do you use to go from Alkene to Alkane?
NaHCO3 ✓
Ethanolic NH3 ✓
Acidified potassium dichromate / reflux ✓
H2 / Ni ✓
2. What reagents do you use to go from Alkene to Alcohol?
HCN ✓
H2O(g) / H3PO4 ✓
Smirnoff's reagent ✓
H2 / Ni ✓
3. What reagents for Alkane to Haloalkane?
KCN / Uranium ✓
NaX / H2SO4 / heat ✓
Uranium ✓
Radical substitution: X2 / UV light ✓
4. Haloalkane to Alcohol?
NaOH / heat ✓
KCN / Ununoctium ✓
NaBH4 ✓
HCl / heat ✓
5. Alcohol to Alkene?
H2SO4 / heat ✓
NaBH4 ✓
Ethanolic KCN ✓
X2 / UV Light ✓
6. You reflux tertiary alcohol + acidified potassium dichromate What do you get?
Carboxylic acid ✓
Aldehyde ✓
No change ✓
Ketone ✓
7. Butan-1-ol is distilled with acidified potassium dichromate. What do you get?
Butanone ✓
Butanal ✓
Butanoic Acid ✓
But-2-ene ✓
8. Butan-2-one is reacted with Z to form an Butan-2-ol. What is Z?
Cinnamaldehyde ✓
HCN ✓
NaBH4 ✓
H2SO4 / reflux ✓
9. Walter is doing a PAG, and needs to make methanoyl chloride from methanol. What reagents does he use?
Add SOCl2 ✓
Reflux with acidified potassium dichromate ✓
NaBH4 ✓
1. Reflux with acidified potassium dichromate THEN 2. Add SOCl2 ✓
10. What can Walter NOT make, in one step, using an Acyl Chloride?
Secondary amide, by adding a primary amine ✓
Ester, by adding alcohol ✓
Primary amide, by adding ammonia ✓
Carboxylate salt, by adding NaOH ✓
11. How can you reduce a nitrile to an amine?
H2 / Ni ✓
ethanolic KCN ✓
UV and X2 ✓
ethanolic NH3 ✓
12. Walter wants to make a secondary amine from a primary amine. What reagents does he use?
CH3Cl + CH2(Cl)CH2CH(CH3)NH2 / Ethanol ✓
HNO3 / H2SO4 ✓
CH3Cl + KCN / Ethanol ✓
CH3Cl + NH3 / Ethanol ✓
13. In the last step of Walter's synthesis, he is alkylating benzene. What reagent and catalyst does he use, and what is the name of this process?
RCl / AlBr3 / Friedel-Crafts Alkylation ✓
RCl / AlCl3 / Friedel-Crafts Alkylation ✓
RNH2 / AlCl3 / Friedel-Crafts Alkylation ✓
RCl / AlCl3 / Schade-Havertz Acylation ✓
14. NO2 to NH2?
Sb + HCl then add NaS2O3 ✓
Sb + HCl then add NaOH, to deprotonate NH3+ ✓
Sn + HCl then add NaS2O3 ✓
Sn + HCl then add NaOH, to deprotonate NH3+ ✓
15. I am nitrating phenol What reagents do I need and what position will the substitution occur?
HNO3 only, 3 ✓
HNO3 / H2SO4, 2 and 4 ✓
HNO3 only, 2 and 4 ✓
HNO3 / H2SO4, 3 ✓
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