Carbonyl compunds Flashcards
LiAlh4 reduces Aldehyde and ketone into?
1-alcohol and 2-alcohol respectively
1 mole of Lialh4 gives
4 moles of aldehydes and ketones
Which groups are not affected by LiAlH4?
C=C and C≡C
CH3-CHO ————> in presence of LiAlH4 ——–>?
CH3-CH2OH
CH2=CH-CHO IN PRESENCE OF LiAlH4 ———>?
CH2-CH-CH2OH
NABH4 reduces Aldehyde and ketone into?
1-alcohol and 2-alcohol respectively
Which groups are not affected by NABH4?
C=C and C≡C, -COOH, -COOR
NI + H2 reduces Aldehyde and ketone into?
1-alcohol and 2-alcohol respectively
Which groups are not affected by NI + H2?
——————— (C=C AND C≡C GETS AFFECTED)
What do Zn+Hg and Con. Hcl, do?
covert -c=o to -ch2 and -no2 to -nh2
ex:- HCHO + Zn-Hg——->?
CH4
How does Zn-Hg convert alcohol into?
-Ch2oh —–> - CH2Cl
What do N2H4 + KOH + Glycerol, do?
covert -c=o to -ch2
What is the mechanism of reaction with N2H4 + KOH + Glycerol?
In this reduction, carbonyl compound is fist converted into hydrazine and then to hydrocarbon
Ex:- -C=O + NH2-NH2———> -C-N-N-H2 ———-> -CH2
What acts as a Dehydrohalogenating agent?
KOH + glycerol
ex:- Ch3-Ch-cl-Cho ———> Ch3-ch=ch-ch3
What do Red P + HI, do?
covert -c=o to -ch2
What is an aldol?
the product that contains both aldehydes and ketones
What is aldol condenstation rxn?
Aldol or ketol on heating gives alpha-beta-unsaturated carbonyl compound
What reaction is aldol condensation reaction and what is the intermediate?
Nucleophilic addition reaction and intermediate is carboanion
CH3-CHo +Ch3-ChO ———-> ?
CH3-CH=Ch-CHo
CH3-CH=Ch-CHo ————> Nabh4
H2/Pd/C
H2/NI/heat
Ch3-CH=Ch-CH2oh
CH3-CH2-CH2-CHo
C-C-C-Ch2OH
CH3-CHO + CH3-CH2_CHO ——>? (OH/heat)
CH3-CH=C-CH3-CHO
What id claisen-schimdt reaction?
Croessed aldol condensation between aromatic aldehyde and aliphatic ketone or mixed ketones
This reaction is catalysed by base
C6H5-CHO +CH3-C=O-CH3————>(oh/heat)
C6H5-CH=CH-C=O-C6H5
