1.

Arrange the following nucleophiles in the decreasing order of nucleophilicty-

Answer»

2 - ethylalanine
2 - methylglycine
2 - hydroxymethylserine
tryptonhan

Solution :2 - ethylalanine,
`H_(5)C_(2)-overset(NH_(2))overset(|)underset(CH_(3))underset(|)(C)-COOH` (Chiral)
2 -methylglycine, `CH_(3)-overset(NH_(2))overset(|)underset(H)underset(|)(C)-COOH` (Chiral)
2 -hydroxymethylserine,
`HOCH_(2)overset(NH_(2))overset(|)underset(CH_(2)OH)underset(|)(C)-COOH` (Arhiral)


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