Home
Class 12
CHEMISTRY
Compare the two methods shown for the pr...

Compare the two methods shown for the preparation of carboxylic acids:

Mehod 1 : `RBr overset(Mg) underset("diethyl ether") rarr RMg Br overset(1.CO_2)underset(2.H_3O^+) rarr RCO_2H`
Method 2 : `RBr overset(NaCN) rarr RCN overset(H_2O,HCl)underset(heat) rarr RCO_2H`
Which one of the following statements correctly describes this conversion ?

A

Both method 1 and method 2 are appropriate for carrying out this conversion

B

Neither method 1 nor method 2 is appropriate for carrying out this conversion

C

Method 1 will workwell, but method 2 is not appropriate

D

Method 2 will workwell, but method 1 is not appropriate

Text Solution

Verified by Experts

The correct Answer is:
C
At bridge head `S_(N_2)` doesn.t take place. According to bredt.s rule bridge head carbon can.t be `sp^2`-hybridized.
(Nal + Acetone) + R -X reaction `S_(N^2)` depends on
(1) Leaving group tendency is suitable preparation.
(2) Steric crowding .
Promotional Banner

Topper's Solved these Questions

  • 5C ALKYL HALIDES

    MS CHOUHAN|Exercise LEVEL-2 |3 Videos

  • 5C ALKYL HALIDES

    MS CHOUHAN|Exercise LEVEL-2 (SUBJECTIVE PROBLEMS)|1 Videos

  • ALCOHOL,ETHERS AND EPOXIDES

    MS CHOUHAN|Exercise SUBJECTIVE PROBLEMS|1 Videos

Similar Questions

Explore conceptually related problems

overset(Mg)rarr X overset(CO_(2))rarr Y overset(H_(2)O)rarr Z

What are Xand Y =in the following reaction sequence? " Propene " overset(HBr)rarr A overset(Mg)underset("Dry ether")rarr B overset(1.x)underset(2. H_3O^+)rarr

Glucose overset(H_2O)underset("Enzyme") rarr C_2H_5OH + CO_2 + Energy The above reaction is an examples of

C_(6)H_(5)NH_(2)overset(NaNO_(2)+HCl)underset(283K)rarr Products in the reaction are

CH_(3)- CH = CH_(2) + H_(2)O + PdCl_(2) overset(CuCl_(2))rarr X underset(-2H_(2)O)overset(HCl)rarr Y . What is 'Y' ?

underset(OH^(-))overset(KMnO_(4))rarr A underset(H_(2)SO_(4))overset(Dil)rarr B

C_(2)H_(5)Cl overset(KCN) rarr X overset(H_(2)//"Catalyst")rarr Y overset(CHCl_(3)) underset(alc, KOH) rarr Z What is 'Z' in the above sequence of reactions ?

Write the organic substances A, B and C in the reaction given below. CH_(3)COONa overset(Delta)underset(" Soda lime ")rarr A overset(Cl_(2))underset(h upsilon)rarr B overset(" Na ")underset(" ether ")rarr C

Phenol overset("Raney nickel")rarr overset(CrO_(3)//H_(2)SO_(4))rarr overset(H_(2)NOH)rarr overset(H_(2)SO_(4) " and heat")rarr overset(H_(2)O "heat")rarr Polymer. The polymer is

CH_4+ Cl_2 underset(-HCl)overset(hv)(rarr) A underset(-HCl)overset(+Cl_2)(rarr)B underset(-HCl)overset(+Cl_2)(rarr) C C underset(-HCl)overset(+Cl_2)(rarr) D Correct order of Dipole moments is