问题
单项选择题
醌类化合物中,下列基团甲基化按从易到难顺序排列为()。
A.-COOH>β-OH>Ar-OH>α-OH>R-OH
B.R-OH>α-OH>Ar-OH>β-OH>-COOH
C.-COOH>α-OH>Ar-OH>β-OH>R-OH
D.R-OH>β-OH>Ar-OH>α-OH>-COOH
E.Ar-OH>β-OH>α-OH>-COOH>R-OH
答案
参考答案:A
醌类化合物中,下列基团甲基化按从易到难顺序排列为()。
A.-COOH>β-OH>Ar-OH>α-OH>R-OH
B.R-OH>α-OH>Ar-OH>β-OH>-COOH
C.-COOH>α-OH>Ar-OH>β-OH>R-OH
D.R-OH>β-OH>Ar-OH>α-OH>-COOH
E.Ar-OH>β-OH>α-OH>-COOH>R-OH
参考答案:A