CHO DÃY CHUYÓN HOÁ
Câu 20: Cho dãy chuyÓn hoá :
H
2
NCH
2
COOH
+NaOH
mu i X
+dd HCl
ch t h u c Y.
X, Y có công th c c u t o là
A. H
2
N-CH
2
-COONa ; NH
3
ClCH
2
-COONa
B. H
2
N-CH
2
-COONa ; NH
3
ClCH
2
-COOH
C. H
2
N-CH
2
-CH
2
-COONa ; H
2
N-CH
2
-COOH
D. H
2
N-CH
2
-COONa ; NH
2
CH
2