Question

1.The main product of the reaction between p-cresol and Br2 / FeBr3 is:

1. 3-Bromo-4-methyl phenol
2. 2-Bromo-4-methyl phenol
3. 2-methyl-4-bromine phenol
4. 3-methyl-4-bromine phenol

2.Which of the following compounds is the least reactive in the nucleophilic substitution with NaOH?

1. 2,4-dinitrochlorobenzene
2. m-nitrochlorobenzene
3. o-nitrochlorobenzene
4. 3,5-dinitrochlorobenzene

3.What is the mechanism (s) for the reaction of 4-bromo-1-nitrobenzene with sodium hydroxide to form 4-nitrophenol?

1. bimolecular nucleophilic substitution (Sn2)
2. aromatic nucleophilic substitution by addition-elimination
3. aromatic nucleophilic substitution by elimination-addition
4. aromatic electrophilic substitution

4.which of the following is the correct ascending order, for boiling points?

a. n-butane <1-butane <diethyl ether <2-butanone

b. n-butane <2-butanone <diethyl ether <1-butane

c. n-butane <diethyl ether <1-butane <2-butanone

d. n-butane <diethyl ether <2-butanone <1-butane

5. In which of the following resonance relocation, electronic density does not play a role?

a. allyl cation

b. benzyl anion

c. cyclohexane radical

d. carbonate anion

6. What is not a Hukel criterion for aromaticity?

a. Compound must be cyclic

b. You must have an orbital p for each atom

c. It must be flat or almost flat, for the overlapping of orbitals p

d. must have at least one ring with 6 pi electrons

7. What is the main product of the reaction of benzene with isobutyl chloride in the presence of AlCl3?

a. chlorobenzene

b. t-butylbenzene

c. n-butylbenzene

d. sec-butylbenzene

8.What is the main product of the reaction between 1-cyclobutyl-1-ethanol and H2SO4 + heat?

a. 1-methyl cyclopentene

b. 3-methyl cyclopentene

c. 1-cyclobutyl ethene

d. 2-cyclobutyl ethene

9.What is the largest organic product of the 3-penten-2-one reaction with 1) sodium borohydride and 2) water?

a. 2-pentanone

b. (E) -3-penten-2-ol

c. (S) -2-pentanol

d. 4-hydroxy-2-pentanone

10.Which of the following compounds: does it not produce benzoic acid when potassium permanganate (KMnO4) with strong base and heat is added?

a. dichlorophenylmethanol

b. phenylmethanol

c. 2-phenylheptane

d. 1-phenyl heptanol

Answer 1