Home
Class 12
CHEMISTRY
S(N)1 reactions are accompanied by racem...

`S_(N)1` reactions are accompanied by racemization in optically active halides.

Text Solution

Verified by Experts

In `S_(N)1` reactions, carbocations are the intermediates. Since carbocations are planar species, therefore, attack of the nucleophile on them cann occur from both the sides (front and rear) with almost equal ease giving a 50:50 mixture of the two enantiomers, i.e., a racemix mixture is obtained.
Promotional Banner

Topper's Solved these Questions

  • HALOALKANES AND HALOARENES

    PRADEEP|Exercise ADDITIONAL QUESTIONS (SHORT ANSWER QUESTIONS)|47 Videos

  • HALOALKANES AND HALOARENES

    PRADEEP|Exercise ADDITIONAL QUESTIONS (LONG ANSWER QUESTIONS)|4 Videos

  • HALOALKANES AND HALOARENES

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (LONG ANSWER QUESTIONS)|3 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    PRADEEP|Exercise Curiosity Questions|2 Videos

  • ORGANIC COMPOUNDS CONTAINING NITROGEN

    PRADEEP|Exercise IMPORTANT QUESTIONS FOR BOARD EXAMINATION|27 Videos

Similar Questions

Explore conceptually related problems

Give reasons: (i). C-Cl bond length in chlorobenzene is shorter than C-Cl bond length in CH_(3)-Cl (ii). The dipole moment of chlorobenzene is less than of cyclohexyl chloride. (c). S_(N^(1)) reactions are are accompanied by racemisation is optically active alkyl halides.

A racemic mixtrue is optically inactive due to :

Which of the following set of statements regarding the S_N1 reaction shown by alkyl halide is correct here? 1. the S_N1 reaction on the chiral starting material end up with racemization of the product 2. The more stable the carbocation intermediate the faster the S_N1 reaction . 3. The added nucleophile plays no kinetic role in S_N1 reaction 4. The S_N1 reaction involves the inversion of configuration of the optically active substrate

Racemic tartaric acid is optically inactive due to

PRADEEP-HALOALKANES AND HALOARENES-ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS)
  1. What do prefixes (+),(-) and (+-) before an organic compound mean?

    Text Solution

    |

  2. What is a racemic mixture? Give an example

    Text Solution

    |

  3. S(N)1 reactions are accompanied by racemization in optically active ha...

    Text Solution

    |

  4. What is the lowest molecular mass alkane that is chiral? Is there anot...

    Text Solution

    |

  5. An acid of molecular formula, C(5)H(10)O(2) is optically active. What ...

    Text Solution

    |

  6. A carboxylic acid of the formula, C(3)H(5)O(2)Br is optically active. ...

    Text Solution

    |

  7. Give the structure of lowest molecular mass alcohol which is chiral?

    Text Solution

    |

  8. C(C(6)H(12)), and optically active dydrocarbon which on catalytic hydr...

    Text Solution

    |

  9. Which out of the two : 2-cyclopentenol or 3-cyclopentenol has chiral c...

    Text Solution

    |

  10. Why is the seperation of lanthanoids difficult ?

    Text Solution

    |

  11. Write a chemical reaction in which the iodide ion replaces the diazoni...

    Text Solution

    |

  12. What effect should the following resonance of vinyl chloride have on i...

    Text Solution

    |

  13. Why is vinyl chloride less reactive than ethyl chloride ?

    Text Solution

    |

  14. Which of the following is most reactive toward nucleophilic substituti...

    Text Solution

    |

  15. Give reasons: (i). C-Cl bond length in chlorobenzene is shorter than...

    Text Solution

    |

  16. The dipole moment of vinyl chloride is lower than that of methyl chlor...

    Text Solution

    |

  17. Grignard reagent of C(6)H(5)Cl can be prepared in THF but not in ether...

    Text Solution

    |

  18. Give reasons: (a) n-Butyl bromide has higher boiling point than t-bu...

    Text Solution

    |

  19. Arrange the following in the increasing order of ease of nucleo...

    Text Solution

    |

  20. Give one example (with equation) wurtz-fittig reaction.

    Text Solution

    |