reactii de obtinere de acetali si cetalii corespunzatori
R-CH=O + R-OH --> R-C(OH)-O-R = semiacetal
+ R'-OH --> R-C(-OR')-O-R acetal, deoarece a plecat de la aldehida
R2C=O + R-OH --> R2C(OH)-O-R = semicetal
+ R'-OH --> R2C(-OR')-O-R cetal, deoarece a plecat de la cetona
poza 1
(CH3)2CH-CO-CH3 + C2H5-OH --H+--> (CH3)2CH-C(OH)(-O-C2H5)-CH3
+ C2H5-OH --H+--> (CH3)2CH-C(O-C2H5)(O-C2H5)-CH3
poza 2
(CH3)2CH-CH=O + CH3-OH --H+--> (CH3)2CH-C(OH)-O-CH3
+ CH3-OH --H+--> (CH3)2CH-C(O-CH3)-O-CH3
