CH3-COOH+Cl2=CH2Cl-COOH+HCl
CH2Cl-COOH+NH3=CH2-COOH+HCl
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NH2
CH2-COOH+HNO2=CH2-COOH+N2+H2O
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NH2 OH
CH2-COOH+H-COOH=COOH-CH2-O-CO-H+H2O
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OH
COOH-CH2-O-CO-H+H2=COOH-CH2-O-CH2OH
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