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STATEMENT -1: The addition of amines in...

STATEMENT -1: The addition of amines in aldehyde and ketone is carried out in weakly acidic medium
STATEMENT -2 : In strong acidic medium amines will protonated the nucleophilic character of amine decrease.

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(A)
protonated Amines acts as electrophiles
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Assertion: The addition of ammonia derivative to a carbonyl compound is carried out in weakly acids medium. Reason : In weakly acidic medium attacking nucleophile is also protonated.

Aldehydes and ketones react with ammonia derivatives in weakly acidic/strongly acidic medium.

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Give reasons in one or two sentances for the following: 'Hydrazones of aldehydes and ketones are not prepared in highly acidic medium'.

Aldehydes and ketones undergo nucleophilic addition reactions. With weak nucleophiles such as ammonia and its derivatives, (H_2 N-Z) , aldehydes and ketones react in weakly acidic medium to form compounds containing carbonnitrogen double bond with the elimination of water to form . Aldehydes can be easily oxidised to carboxylic acid on treatment with common oxidising agents like KMnO_4 K_2 Cr_2 O_7 , HNO_3 , etc. The carboxylic acid formed contain the same number of carbon atoms as the aldehydes. However ketones under drastic conditions with powerful oxidising agents undergo cleavage of C-C bond giving mixture of carboxylic acids having lesser number of C atoms than the original ketone. Arrange the following in the decreasing order of their reactivity towards HCN: HCHo , CH_3 COCH_3 , CH_3 CHO ,C_6 H_5 CHO

Aldehydes and ketones undergo nucleophilic addition reactions. With weak nucleophiles such as ammonia and its derivatives, (H_2 N-Z) , aldehydes and ketones react in weakly acidic medium to form compounds containing carbonnitrogen double bond with the elimination of water to form . Aldehydes can be easily oxidised to carboxylic acid on treatment with common oxidising agents like KMnO_4 K_2 Cr_2 O_7 , HNO_3 , etc. The carboxylic acid formed contain the same number of carbon atoms as the aldehydes. However ketones under drastic conditions with powerful oxidising agents undergo cleavage of C-C bond giving mixture of carboxylic acids having lesser number of C atoms than the original ketone. Name the product formed when formaldehyde reacts with ammonia.

NARAYNA-CARBONYL COMPOUNDS-LEVEL-V
  1. Match the compounds// ions in Column- 1 with their properties in Colum...

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  2. Match the reaction in column I with appropriate type of steps// reacti...

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  3. Column I Column II

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  4. STATEMENT -1: Aldehydes are more Reactive then corresponding ketone ...

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  5. STATEMENT -1: When Ph -CHO is treated with conc. OH^(-) , formation o...

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  6. STATEMENT -1: HCHO is more reactive then CH(-3)COCH(3) towards nucleo...

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  7. STATEMENT -1: Alphatic Ketone are Less reactive then aliphatic aldel...

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  8. STATEMENT -1: Rate of Nucleophillic addition of p- Nitrobenzaldehyde i...

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  9. STATEMENT -1: Boiling point of ketones is higher then corresponding ...

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  10. STATEMENT -1: Cannizzaro reaction Methanal & Benzaldehyde forma Meth...

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  11. STATEMENT -1: Amixture of on treatment with dil . NaOH gives ...

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  12. STATEMENT -1: The addition of amines in aldehyde and ketone is carrie...

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  13. STATEMENT -1: RCOCl fails to give ketone with RMgX STATEMENT -...

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  14. Complete the following reactions and findout number of carbon atmos pr...

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  15. The rate equation found in Benzillic acid -Benzil rearrangement is ...

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  16. An organic compound 'A' on treatment with ethyl alcohol gives a carbox...

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  17. The commonly observed ratelaw of Benzoin condensation is rate = K[ArCH...

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  18. The order of Canizzarro ' s reaction when base concentration is high.

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  19. During Perkin ' s reaction , a cyclic intermediate is formed. The no ....

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  20. In Witting reaction, a cyclic intermediate is formed called oxaphosphe...

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