Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

JEE Class main Answered

Sir,Why these 3 compounds don't react with LiAlH4,CH3MgBr and KOH ??If u can show some reason with mechanisms type...it will be pleasurable for me,thanks
question image
Asked by vishakhachandan026 | 22 Jan, 2020, 10:08: AM
answered-by-expert Expert Answer
In the first reactions, the given reactant is a ketone whose carbonyl group is protected by alcohol, hence it does not react with the Grignard reagent.
 
 
Since the reaction centre carbonyl group is protected by a protecting group i.e. alcohol, the nucleophile or Grignard reagent will not give any reaction.
 
The same case is with reaction (2) and (3), because of protecting group that specific functional group is protected and does not give reaction further.
 
following is an example for better understanding:
In the below reaction if we treat strong reducing agent LiAlH4 with the reactant it reduces both ketones as well as ester, well if we only want to reduce ester not ketone then with the help of protecting group glycol this can be possible.
Glycol is used as a protecting group for the carbonyl group, which can easily be removed by simply hydrolysis.
 
Answered by Ramandeep | 22 Jan, 2020, 11:37: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
JEE main - Chemistry
iupac
Asked by vidhya9829 | 06 Nov, 2024, 14:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
mole concept
Asked by k9657552 | 05 Aug, 2024, 10:48: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
diels alder reaction of
Asked by neerajavuppala1983 | 23 Jul, 2024, 22:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
chemical equation
Asked by tanniruv133 | 03 Jul, 2024, 18:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
10.3 When 20 ml of 0.2 M - DCl solution is mixed with 80 ml of 0.1 M – NaOD solution, pD of the resulting solution becomes 13.6. The ionic product of heavy Water, D,O, is (a) 10-15 (b) 10-16 (c) 4x 10-15 (d) 4x 10-16 6. Equilibai
question image
Asked by heyyyyy | 12 Jun, 2024, 19:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
How to find ionization energy of sodium
Asked by hv5594265 | 12 Jun, 2024, 11:59: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
which of the following Phosphorus halide does not exist? pcl3, pcl5 , pbr3,PBr5
question image
Asked by rupalibhange1987 | 11 Jun, 2024, 20:00: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
formula of acetic acid
Asked by gajju8493 | 11 Jun, 2024, 15:09: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
ph of 10-8 m hcl
Asked by Asiri | 09 Jun, 2024, 19:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Chemistry
i am unable to understand the meaning of distilate
question image
Asked by chakrabortymithu041 | 29 May, 2024, 18:45: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt