X có thể là: \(C_6H_5-CH_2-CH_2-OH\) 2-phenyletanol
hoặc \(C_6H_5-CH(CH_3)-OH\)
1-phenyletanol
Y là C6H5 - CH = CH2 stiren
\({C_6}{H_5} - C{H_2} - C{H_2} - OH\xrightarrow{{{H_2}S{O_4},{t^0}}}\) \( C_6H_5 - CH = CH_2\) + \({H_2}O\)
\( nC_6H_5 - CH = CH_2\) \(\xrightarrow{{t^0,p,xt}}\) \( (-CH-CH_2-)_n\)
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\(C_6H_5\)