Pages

▼
Showing posts with label CORBONYL COMPOUNDS. Show all posts
Showing posts with label CORBONYL COMPOUNDS. Show all posts
Thursday, July 3, 2025

Wolf-Kishner reduction: Reduction of carbonyl into alkane with hydrazine in high boiling solvent such as glycol .

›
This reaction is not preferred when base sensitive groups like halogens  or bulky groups are present.

Clemmensen reduction: reduction of an aldehyde or a ketones with zinc amalagam and concentrate Hydrochloric (HCl) acid.

›
Note; Clemmensen reduction not  suitable for those compound having acid sensitive groups ( basic in nature) such as  Alcohol, am...
Saturday, June 28, 2025

Choral (CCl3CHO) has no alpha hydrogen but can not give cannizzaro's reaction ?

›
  When Chloral Boiled with NaOH gives Haloform Reaction. Here CCl3 (-)  group is Very Good Leaving group hence cannizzaro not possible  CANN...
Monday, July 20, 2020

What is bromoform reaction?

›
Haloform reaction includes Chloroform, Bromoform and Iodoform reaction, It is feature reaction of terminal methyl ketones and alpha hydroxy ...

Is Methanal an aldehyde?

›
Yes ! Methanal is a aldehyde containing -CHO group. And is molecular formula is HCHO . It is more commonly known as formaldehyde. It is also...
Wednesday, January 29, 2020

There are two -NH2 groups in semicarbazide that might react with a ketone or aldehyde. Explain why the reaction occurs with only one -NH2.

›
The  -NH 2  group closer to the carbonyl group is deactivated (resonance-stabilized) compared with the other end  -NH 2   group: ...
Tuesday, January 28, 2020

Which ketones gives a positive Tollen's test ?

›
Alpha hydroxy ketones are gives positive Tollen's test because tauotomerise into aldehyde . Related Questions: Penta-1,3-d...
Sunday, January 26, 2020

Dimethyl acetaldehyde undergoes Cannizzaro's reaction despite its contains alpha hydrogen. explain.

›
Because of the presence of only one alpha hydrogen , it's alpha hydrogen is very very weak acidic and so aldol condensation is slowe...
Friday, January 17, 2020

How can explain resorcinol (1,3-Dihydroxybenzene) give positive Iodoform test?

›
Resorcinol (1,3-Dihydroxybenzene) give positive iodoform test because it is in equilibrium with its tautomer cyclohex-2-en-1,5-dione. It ...

How can explain that 1, 3, 5-Trihydroxybenzene give positive iodoform test?

›
1,3,5-trihydroxybenzene give positive iodoform test because it is in equilibrium with its tautomer cyclohexane-1,3,5-trione. It give 3,5-di...
Sunday, November 10, 2019

CANNIZZARO REACTION: DISPROPORTIONATION:

›
(1)  Introduction: (2)  Mechanism: (3)  Condition for cannizaro reaction: (4)  Illustrative Examples (5)  Crossed Cannizzaro reac...

MECHANISM OF CANNIZARO REACTION:

›
Step – (1): The cannizzaro reaction is initiated by the nucleophilic attack of a hydroxide ion to the carbonyl carbon of an aldehyde mo...

CONDITION FOR CANNIZARO REACTION:

›
(1) Primary condition of cannizaro reaction is absence of alpha hydrogen in aldehyde but (CH 3 ) 2 CH-CHO gives cannizaro reaction alth...