Tách nước theo quy tắc Zai-xep :
\(CH_3-CHOH-CH_3 \xrightarrow{t^o,H_2SO_4} CH_2=CH-CH_3 + H_2O\)
(Tên anken : propen)
\(CH_3-CH_2-CH_2OH \xrightarrow{t^o,H_2SO_4} CH_3-CH=CH_2 + H_2O\)
(Tên anken : propen)
\(CH_3-CH_2-CH_2-CH_2OH \xrightarrow{t^o,H_2SO_4} CH_3-CH_2-CH=CH_2 + H_2O\)
(Tên anken : buten)
\(CH_3-C(CH_3)_2-OH \xrightarrow{t^o} CH_2=C(CH_3)-CH_3 + H_2O\)
(Tên anken : 2-metyl propen)