[awais]

I have 2 questions:

1. I have to convert 1,3-dichloro-2-propanol to 1,3-dimercapto-2-propanol, using some safer method which should not effect the OH group.

2. How to convert the COOH group to ester. compound to be covert is 1,3-dibromo-2-carboxylic acid.

This is really nice forum where i found lot of solutions n i thank all of.

[AWK]

1. I think a formal double exchange reaction with KHS or NaHS will work
2. Use PBr3 followed by an alcohol.

[awais]

Thanks, do u have any procedure, i mean i m not a good chemist

[AWK]

Some excess of reagents are needed. Use anhydrous conditions in the reaction with PBr3.