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How would you distinguish the following alcohols from each other using reaction chemistry?

CH3CH(OH)CH(CH3)CH3
(3-methyl-butanol) (IUPAC)



CH3CH(OH)CH=CH2
(3-buten-2-ol) (IUPAC)

I know that they are both secondary alcohols. But that doesn't help me when using the Lucas Test. Would I add a reaction like Br2 to distinguish the two from one another? What would the preferred products be? Thanks for looking at this.

2007-03-26 13:58:03 · 3 answers · asked by Kristin H 1 in Science & Mathematics Chemistry

3 answers

the only difference between the two is that the second has a double bond. the easiest way to test for a double bond i believe is to add Br2. If the color stays the same as the Br2, then it is the non-double bond. If the color changes from the Br2, then it is the double bond.

2007-03-30 03:45:28 · answer #1 · answered by Joshua H 2 · 0 0

Bromine is a good reagent to distinguish these two alcohols. Bromine will react with the double bond of 3-buten-2-ol, forming a vicinal dibromide, but will not react with 3-methyl-2-butanol.

2007-03-26 21:11:46 · answer #2 · answered by davisoldham 5 · 0 0

Be careful with this one. Since there is the possibilities of: stereoisomers, enantimers and diastereomers to consider.

2007-03-26 21:03:23 · answer #3 · answered by Ke Xu Long 4 · 0 0

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