X is a naturally occurring terpenoid with the molecular formula ...

[Frost2351]

X is a naturally occurring terpenoid with the molecular formula C₁₀H₁₈O. It is isolated from geranium oil. X reacts with (S)-BINAP-RuCl₃ and (R)-BINAP-RuCl₃ to form A and B, respectively. Identify X.
 
 
   
  a.
  Naproxen
   
  b.
  Geraniol
   
  c.
  Cannabinoid
   
  d.
  Curcuminoid

Question 2

Identify X and Y in the following reaction.
 
 
   
  a.
  X is 1-methylcyclopentene, and Y is Br₂/H₂O in DMSO.
   
  b.
  X is cyclopentene, and Y is Pd/H₂.
   
  c.
  X is cyclopentadiene, and Y is H₂O.
   
  d.
  X is 2-methylcyclopentadiene, and Y is Br₂ in DMSO.

Question 3

Identify the correct statement for the given reaction given.
 
 
   
  a.
  I and IV are nucleophiles.
   
  b.
  Only I is a nucleophile.
   
  c.
  II and IV are electrophiles.
   
  d.
  Only II is an electrophile.

Question 4

Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of pairs of electrons and the structure of reactive intermediates.
   

Question 5

Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of pairs of electrons and the structure of reactive intermediates.
   

Question 6

Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of pairs of electrons and the structure of reactive intermediates.
   

Question 7

Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of pairs of electrons and the structure of reactive intermediates.
   

Question 8

Provide the structure of the key intermediate in the following reaction?
   

Question 9

Provide the structure of the key intermediate in the following reaction?
   

Question 10

Provide the structure of the key intermediate in the following reaction?
   

[nguyenhoanhat]

Answer to Question 1

b

Answer to Question 2

a

Answer to Question 3

a

Answer to Question 4

The reaction proceeds in three steps:
1. Addition of bromine to propene to afford a cyclic bromonium ion
2. Nucleophilic ring-opening addition of water
3. Deprotonation of oxygen

Answer to Question 5

The reaction proceeds in two steps:
1. Addition of bromine to propene to afford a cyclic bromonium ion
2. Nucleophilic ring-opening addition of bromide anion

Answer to Question 6

The reaction proceeds in three steps:
1. Protonation of propene to form the 2-propyl cation
2. Nucleophilic addition of bromine to the 2-propyl cation
3. Deprotonation of the oxygen

Answer to Question 7

The reaction proceeds in two steps:
1. Protonation of propene to form the 2-propyl cation
2. Nucleophilic addition of bromide anion to the 2-propyl cation

Answer to Question 8



Answer to Question 9



Answer to Question 10



Answer to Question 11

(i) O₃ (ii) (CH₃)₂S

Answer to Question 12

HBr

Answer to Question 13

Br₂, H₂O

Answer to Question 14

Br₂

Answer to Question 15

H₂, transition metal catalyst (e.g., Pt, Pd)

Answer to Question 16

(i) OsO₄; (ii) NaHSO₃, H₂O

Answer to Question 17

H₂O, H₂SO₄
or
(i) Hg(OAc)_2, H₂O; (ii) NaBH₄

Answer to Question 18

(i) BH₃; (ii) H₂O₂, NaOH

Answer to Question 19



Answer to Question 20



Answer to Question 21

2 equivalents of

Answer to Question 22



Answer to Question 23



Answer to Question 24



Answer to Question 25



Answer to Question 26



Answer to Question 27



Answer to Question 28



Answer to Question 29

[Frost2351]

Both answers were spot on, thank you once again

[nguyenhoanhat]

Great! Please up vote