Reaction Scheme Practice Questions PDF

Preview

Summary

Reaction Scheme Practice Questions...

Description

QUESTION 2 (19 marks) (a) On the reaction scheme below: (i) (1 mark) Compound 8 is a _____________________ reagent. (ii) (3 marks) Circle the appropriate classification for each of compounds 1, 3 and 9. (iii) (13 marks) In the boxes on the reaction arrows give the ‘reagents’ required. (iv) (2 marks) Draw, in the boxes provided, the structures of compounds used/formed. 1. 3

Cl 2

1qq / 2qq / 3qq

2. H3O

CH3CHCH2CH2OH

CH3CHCH3

CH3

4

OH

O

CH3CHCH3

1.

CH3CHCH2CH CH3

1qq / 2qq / 3qq

2.

6

OH

CH3CHCH2CHCH2CH3 CH3

O

O

CH3CHCH2COH CH3

1. 8

1.

O2N

2.

1. 2. H3O+ 1qq / 2qq / 3qq

NHNH2 NO2

CH3CHCH2MgBr CH3

OH CH3CHCH2CCH3 9 CH3 CH3

7

CH3CHCH2CCH2CH3 CH3

2. 5

1

CHEM110FC/2014/Test 2/page 2

QUESTION 2 (25 marks) On the reaction scheme below: (a) (1 mark) Circle the Grignard reagent. (b) (3 marks) Circle the appropriate classification for compounds B, E and J. (c) (3 marks) Give, on the line provided, the systematic name for compound F. (d) (11 marks) In the boxes on the reaction arrows give the ‘reagents’ required. (e) (7 marks) Draw, in the boxes provided, the structures of compounds used/formed. I A

1. HCHO + 2. H3O

CH3CH2OH/H+ (excess)

1qq / 2qq / 3qq

B

CH2OH

C

H

G CHO

H2NNH2

CH2Cl 1.

1qq / 2qq / 3qq

2.

D

J

CH2MgCl

OH CH2CCH3 CH3

conc. H2SO4

1. K

2.

1qq / 2qq / 3qq OH E CH2CHCH3

major

+ L

1. 1. 2. F

O CH2CCH3

Name:

+

2. H3O

minor

CHEM110FC/2014/Test 2/page 3

QUESTION 2 (26 marks) On the reaction scheme below: (a) (2 marks) Circle the appropriate classification for compounds 1 and 5. (b) (2 marks) Give, on the line provided, the systematic name for compound 2. (c) (10 marks) In the boxes on the reaction arrows give the ‘reagents’ required. (d) (11 marks) Draw, in the boxes provided, the structures of compounds used/formed. (e) (1 mark) For 1, one product of Step 1, circle major or minor as appropriate. CH3

1. B2H6 Step 1

2. NH2OH

1qq / 2qq / 3qq

CH3

CH3OH/H+ (excess)

CH3

OH

O

+ 1 major / minor Circle one.

1.

2 Name:

2.

CH3 Cl

(in ether)

3 1qq / 2qq / 3qq

CH3

1. MgCl 2.

CH3

1.

OH

(2 molar equiv.)

2.

CCH3 CH3

4

5

8

Molecular formula C 15H20O2

conc. H2SO4 6

7

+

major

minor

Hint: Has an unsplit signal at ~Gwhich corresponds to 2H on an sp3 carbon....