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(A) Write the possible isomers of the formula C_(5)H_(10)O_(2). (B) Draw the structures of all isomeric ethers. Corresponding to the moecular formula, C_(5)H_(12)O. |
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Answer» Solution :(A) (a) Carboxylic acids: (i) `CH_(3)CH_(2)CH_(2)CH_(2)COOH` (ii) `CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)COOH` (iii) `Ch_(3)-Ch_(2)-underset(CH_(3))underset(|)overset(*)(CH)-COOH` (iv) `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-COOH` (b) Esters: (i) `CH_(3)CH_(2)CH_(2)COOCH_(3)` (ii) `CH_(3)CH_(2)COOCH_(2)CH_(3)` (iii) `CH_(3)COOCH_(2)CH_(2)CH_(3)` (iv) `CH_(3)COO-underset(CH_(3))underset(|)(CH)-COOH` (c) Hydroxyladehydes and (d) Hydroxyketones, etc. (B) D.B.E.=1/2[5(4-2)+12(1-2)+1(2-2)]+1=0 Since D.B.E.=0 therefore `C_(5)H_(12)O` representes only saturated ethers, Its POSSIBLE isomers are: (i) `CH_(3)CH_(2)CH_(2)-O-CH_(2)CH_(3)` (ii) `CH_(3)underset(CH_(3))underset(|)(CH)-O-CH_(2)CH_(3)` (iii) `CH_(3)CH_(2)CH_(2)CH_(2)-O-CH_(3)` (iv) `CH_(3)CH_(2)CHCH_(3)` (V) `CH_(3)underset(CH_(3))underset(|)(C)HCH_(2)-O-CH_(3)` (vi) `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-O-CH_(3)` Thus, there are total six isomers. |
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