C H3- CH2 - CH(H3) - CH(CH3) - COH + Ag2O -> CH3-CH2-CH(CH3)-CH(CH3)-COOH + 2Ag
2C H3- C H2- C(Cl)(Cl) - COOH + Zn -> (CH3-CH2-C(Cl)(Cl) COO)2Zn + H2
CH3 - CH(CH3) - COOH + CH3-CH2-OH -> CH3-CH(CH3)COOCH2-CH3 + H2O
C H3- CH2 - CH(H3) - CH(CH3) - COH + Ag2O -> CH3-CH2-CH(CH3)-CH(CH3)-COOH + 2Ag
2C H3- C H2- C(Cl)(Cl) - COOH + Zn -> (CH3-CH2-C(Cl)(Cl) COO)2Zn + H2
CH3 - CH(CH3) - COOH + CH3-CH2-OH -> CH3-CH(CH3)COOCH2-CH3 + H2O