Which of the following reaction could safely be used to relate configuration? (i) (+)-CH_(3)CH_(2)CHOHCH_(3)overset(Na)rarr CH_(3)CH_(2)CH(ONa)CH_(3)overset(C_(2)H_(5)Br)rarr C_(2)H_(5)-O-CH(CH_(3))CH_(2)CH_(3) (ii) (+)-CH_(3)CH_(2)underset(O)underset(||)C-.^(18)OCH(CH_(3))C_(2)H_(5)+OH^(-)rarrCH_(3)CH_(2)COO^(-)+CH_(3)CH_(2)CH^(18)OHCH_(3) (iii) (+)-CH_(3)CH(OH)CH_(2)Br+NaCNrarr CH_(3)CH(OH)CH_(2)CN (iv) (-)-C_(6)H_(5)CH(OC_(2)H_(5))CH_(2)OH+Hbrrarr C_(6)H_(5)(OC_(2)H_(5))CH_(2)Br

Which of the following reaction could safely be used to relate configu

1.	Which of the following reaction could safely be used to relate configuration? (i) (+)-CH_(3)CH_(2)CHOHCH_(3)overset(Na)rarr CH_(3)CH_(2)CH(ONa)CH_(3)overset(C_(2)H_(5)Br)rarr C_(2)H_(5)-O-CH(CH_(3))CH_(2)CH_(3) (ii) (+)-CH_(3)CH_(2)underset(O)underset(\|\|)C-.^(18)OCH(CH_(3))C_(2)H_(5)+OH^(-)rarrCH_(3)CH_(2)COO^(-)+CH_(3)CH_(2)CH^(18)OHCH_(3) (iii) (+)-CH_(3)CH(OH)CH_(2)Br+NaCNrarr CH_(3)CH(OH)CH_(2)CN (iv) (-)-C_(6)H_(5)CH(OC_(2)H_(5))CH_(2)OH+Hbrrarr C_(6)H_(5)(OC_(2)H_(5))CH_(2)Br
Answer» (i),(ii),(iii) (i),(ii),(iii),(IV) (i),(iii) (ii),(iv) Solution :In these reactions NONE of the bonds to chiral carbon is broken and thus the CONFIGURATION AROUND the chiral carbon is retained.