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The order of stability of the following ...

The order of stability of the following tautomeric compounds is :
`CH_(2)=overset(OH)overset(|)C-CH_(2)-underset(I)overset(O)overset(||)C-CH_(3) hArr Ch_(3)-overset(O)overset(||)C-CH_(2)-underset(II)overset(O)overset(||)C-CH_(3) hArr CH_(3)-overset(OH)overset(|)C=CH-underset(III)overset(O)overset(||)C-CH_(3)`

A

`III gt II gt I`

B

`II gt I gt III`

C

`II gt III gt I`

D

`I gt II gt III`

Text Solution

Verified by Experts

The correct Answer is:
A
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The order of stability of the following tautomeric compounds is (i). CH_(2)=overset(OH)overset(|)(CH)-CH_(2)-overset(O)overset(||)(C)-CH_(3)hArr (ii). CH_(3)-overset(O)overset(||)(C)-CH_(2)-overset(O)overset(||)(C)-CH_(3)hArr (iii). CH_(3)-overset(OH)overset(|)(C)=CH-overset(O)overset(||)(C)-CH_(3)

The molecules CH_(3)-overset(O)overset(||)C-CH_(2) -overset(O)overset(||)C-O-C_(2)H_(5) and CH_(3)-overset(OH)overset(|)C-OH-overset(O)overset(||)C-O-C_(2)H_(5) are

CH_(3)overset(O)overset(||)"CCH"_(2)overset(O)overset(||)COCH_(3) is reduced to CH_(3)underset(OH)underset("| ")"CH"CH_(2)overset(O)overset(||)COCH_(3) by

O_(2)N-underset((P))CH_(2)-overset(O)overset(||)C-OH Me_(3)overset(o+)N-underset((Q))CH_(2)-overset(O)overset(||)C-OH NC-CH_(2)underset((R))-overset(O)overset(||)C-OH HO-overset(O)overset(||)Cunderset((S))-overset(O)overset(||)C-OH:

Arrange the following compounds in decreasing order of nucleophilic addition reaction : CH_(3)-underset("I")overset(O)overset(||)C-CH_(3)" "CH_(3)-underset("II")overset(O)overset(||)C-Cl" "CH_(3)-underset("III")overset(O)overset(||)C-OH " "CH_(3)-overset(O)overset(||)underset(IV)C-NH_2 " "CH_(3)-overset(O)overset(||)C-underset(V)O-overset(O)overset(||)C-CH_(3)

The IUPAC name of CH_(3)-overset(O)overset(||)(C)-CH_(2)-overset(OH)overset(|)(CH)-CHO is