[CLMZ]

Need help in determining a logical reaction mechanism to explain the formation of the major and minor products for the reaction of alcohol 1 with HBr which gave 3-bromo-2,3-dimethylpentane as the major product and 2-bromo-3,4-dimenthylpentane as the minor product

[AC Prabakar]

It will be helpful if i got the structure of alcohol to reply your question.

[Dan]

I assume the structure of the alcohol is unknown and you need to work its structure out from the products.

CLMZ - Look up 1,2 hydride shifts and carbocation rearrangements, there's tons of stuff on google and in any organic textbook - it's fairly straightforward from there.