Home
Class 12
CHEMISTRY
What is LDA?...

What is LDA?

Text Solution

Verified by Experts

a.
b. LDA (a bulky strong base) abstracts less hindered `alpha`-H atom to form lithium enolate which adds to C of `(CH=O)` group, to form `beta`-hydrogen ketone, limiting to only one crossed aldol product. On the other hand, with a weak base (NaOH), two crosed products are formed.

c.
d.
e.
Promotional Banner

Topper's Solved these Questions

  • ALIPHATIC AND AROMATIC ALDEHYDES AND KETONES

    CENGAGE CHEMISTRY ENGLISH|Exercise Solved Examples|13 Videos

  • ALIPHATIC AND AROMATIC ALDEHYDES AND KETONES

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises Subjective|52 Videos

  • ALCOHOL,PHENOL AND ETHERS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Analytical And Descriptive|15 Videos

  • APPENDIX INORGANIC VOLUME 2

    CENGAGE CHEMISTRY ENGLISH|Exercise Short Answer Type|179 Videos

Similar Questions

Explore conceptually related problems

. What is A?

What is A ?

What is A?

What is GEAC and what are its objectives?

What is GEAC and what are its objectives?

What is Acid rain ? What are its harmful effects ?

Consider the following reactions (LDA=lithiumdiisopropyl amide) the products M and Y respectively are

What is anaphylaxis? What are the symptoms of it?

What is matter? What is it made of?

CENGAGE CHEMISTRY ENGLISH-ALIPHATIC AND AROMATIC ALDEHYDES AND KETONES-Archives Subjective
  1. What is LDA?

    Text Solution

    |

  2. Write the structural formula of the main organic product formed when m...

    Text Solution

    |

  3. Outline the reaction sequence for the conversion of methanol to ethana...

    Text Solution

    |

  4. Show with balanced equation what happens when the following are mixed:...

    Text Solution

    |

  5. Write down the reactions involved in the preparation of the following ...

    Text Solution

    |

  6. Correct order of reactivity of CH(3)CHO,C(2)H(5)COCH(3)andCH(3)COCH(3)...

    Text Solution

    |

  7. Write down the main product of the following reaction : Propanal und...

    Text Solution

    |

  8. Give reason in one or two sentence for the following "Hydrazones of al...

    Text Solution

    |

  9. In what manner the following transformation might be carried out (in n...

    Text Solution

    |

  10. Complete the following with appropriate structures.

    Text Solution

    |

  11. Arrange the following in the increasing order of expected enol content...

    Text Solution

    |

  12. Write the structure of major organic product expected from the followi...

    Text Solution

    |

  13. How will you bring about the following conversion? "4-nitrobenzaldehyd...

    Text Solution

    |

  14. Complete the following reaction with appropriate structure. C(6)H(5)...

    Text Solution

    |

  15. Complete the following reaction with appropriate structure:

    Text Solution

    |

  16. Suggest appropriate structure of compound (A) (The number of carbon a...

    Text Solution

    |

  17. Draw the structure of 2-methylprop-1-ene

    Text Solution

    |

  18. Acetophenone on reaction with hydroxyl amine hydrochloride can produce...

    Text Solution

    |

  19. An aldehyde (A) (C(11)H(8)O), which does not undergo self aldol conden...

    Text Solution

    |

  20. Complete the following reactions with appropriate structures of produc...

    Text Solution

    |

  21. o-Hydroxy benzaldehyde is more soluble in water than p-hybroxy benzald...

    Text Solution

    |