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Synthetic Routes - OCR A Level Chemistry
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Last updated: June 17, 2023
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| First submitted | June 17, 2023 |
| Times taken | 342 |
| Average score | 73.3% | Report this quiz | Report |
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1. What reagents do you use to go from Alkene to Alkane?
Ethanolic NH3
H2 / Ni
Acidified potassium dichromate / reflux
NaHCO3
2. What reagents do you use to go from Alkene to Alcohol?
H2 / Ni
H2O(g) / H3PO4
Smirnoff's reagent
HCN
3. What reagents for Alkane to Haloalkane?
Radical substitution: X2 / UV light
NaX / H2SO4 / heat
Uranium
KCN / Uranium
4. Haloalkane to Alcohol?
NaBH4
HCl / heat
KCN / Ununoctium
NaOH / heat
5. Alcohol to Alkene?
Ethanolic KCN
H2SO4 / heat
NaBH4
X2 / UV Light
6. You reflux tertiary alcohol + acidified potassium dichromate
What do you get?
Aldehyde
Ketone
Carboxylic acid
No change
7. Butan-1-ol is distilled with acidified potassium dichromate.
What do you get?
Butanone
But-2-ene
Butanoic Acid
Butanal
8. Butan-2-one is reacted with Z to form an Butan-2-ol. What is Z?
NaBH4
H2SO4 / reflux
Cinnamaldehyde
HCN
9. Walter is doing a PAG, and needs to make methanoyl chloride from methanol. What reagents does he use?
1. Reflux with acidified potassium dichromate THEN 2. Add SOCl2
NaBH4
Reflux with acidified potassium dichromate
Add SOCl2
10. What can Walter NOT make, in one step, using an Acyl Chloride?
Primary amide, by adding ammonia
Ester, by adding alcohol
Carboxylate salt, by adding NaOH
Secondary amide, by adding a primary amine
11. How can you reduce a nitrile to an amine?
UV and X2
H2 / Ni
ethanolic KCN
ethanolic NH3
12. Walter wants to make a secondary amine from a primary amine. What reagents does he use?
CH3Cl + KCN / Ethanol
CH3Cl + NH3 / Ethanol
HNO3 / H2SO4
CH3Cl + CH2(Cl)CH2CH(CH3)NH2 / 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?
RNH2 / AlCl3 / Friedel-Crafts Alkylation
RCl / AlBr3 / Friedel-Crafts Alkylation
RCl / AlCl3 / Friedel-Crafts Alkylation
RCl / AlCl3 / Schade-Havertz Acylation
14. NO2 to NH2?
Sb + HCl then add NaOH, to deprotonate NH3+
Sn + HCl then add NaOH, to deprotonate NH3+
Sn + HCl then add NaS2O3
Sb + HCl then add NaS2O3
15. I am nitrating phenol What reagents do I need and what position will the substitution occur?
HNO3 / H2SO4, 2 and 4
HNO3 / H2SO4, 3
HNO3 only, 3
HNO3 only, 2 and 4
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