Why after adding ZnCl2 (in conc.HCl), CH3CHOHCH3 change to CH3CHClCH3 and gives turbidity in a few minutes?
Why after adding ZnCl2 (in conc.HCl), CH3CH2CH2OH has no observable change ?
reaction of alcohol
2011-04-21 12:30 am
回答 (1)
2011-04-21 12:52 am
✔ 最佳答案
as i mentioned in another question of yours, Sn1 is more favorable -- due strongly ionic and polar medium given by presence of conc. acid and salt) for the reaction. CH3CHOHCH3, or propan-2-ol, is a secondary alcohol. carbocation formed is not very stabilized, so reaction can be slow.
CH3CH2CH2OH, propan-1-ol is a primary one. rate of Sn1 for primary alcohol is even slower (as cation is even less-stabilized).
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