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Give the structures of A,B and C. (i) ...

Give the structures of A,B and C.
(i) `CH_(3)COOH overset(LiAlH_(4))to A overset(Cu573K)toB`
(ii) `CH_(3)CHO overset(CH_(3)MgBr)to A overset(B)to CH_(3)CHOHCH_(3)`
(iii) `CH_(3)COOH overset(LiAlH_(4))to A overset(SOCl_(2))to`
(iv) `CH_(3)Br overset(KCN)to A overset(LiAlH_(4))to B overset(HNO_(2),273K)toC`.

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