Arrange the following functional groups in the decreasing order of their priority in priority table 1._Co_ 2._OH 3.CN 4._COOH
Answers
Explanation:
ANSWER
The decreasing order of priority of functional group is :
1. −CONH
2
2. −CN
3. −CHO
4. −OH
Priority table of functional groups of organic chemistry
Formula Function Sufix
(main function) Prefix
(secondary function) Example
R−
C
∣∣
O
−OH Acid -oic acid carboxyl- CH
3
−COOH
Ethanoic acid
R−
C
∣∣
O
−O−R
′
Ester -yl -oate CH
3
−COO−CH
3
Methyl ethanoate
R−
C
∣∣
O
−NH
2
Amide -amide carboxamido- CH
3
−CH
2
−CONH
2
Propanamide
R−C≡N Nitrile -nitrile
(cyanide) cyano CH
3
−CN
Ethanenitrile Methyl cyanide
R−
C
∣∣
O
−H Aldehyde -al oxo- CH
3
−CH
2
−CHO
Propanal
R−
C
∣∣
O
−R
′
Ketone -one oxo- CH
3
−Co−CH
3
Propanone
R−OH Alcohol -ol hydroxi- CH
3
−CH
2
OH
Ethanol
R−NH
2
Amine -amine amino- CH
3
−CH
2
−NH
2
Ethylamine
R−O−R
′
Ether -yl,...yletet axo- CH
3
−O−CH
2
−CH
3
Ethylmethyleter
(Ref. image) Alkene -ene CH
3
−CH=CH
2
Propene
−C=C− Alkyne -yne CH
3
−C≡CH
Propyne
R−NO
2
Nitro nitro- CH
3
−CH
2
−NO
2
Nitroethane
R−X Halide fluoro-, chloro-, bromo-, iodo- CH
3
−CH
2
Br
Bromoethane
−R Redical yl- CH
3
−
C
∣
H
CH
3
−CH
3
Methylpropane
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