Organic synthesis problems

I am an A-level student going into university and I am looking for a source of organic synthesis problems and answers that is freely available on the internet. The difficulty level I am looking for is something like first year undergraduate level. Any links would be greatly appreciated.




Search for the latest IChO tests and preparatory problems. You can find quite a few interesting problems.


Here are some tests:
<http://www.iuventa.sk/files/documents/5_icho/past%20competition%20tasks/volume3-icho41-45.pdf>


<http://icho2013.chem.msu.ru/materials/Preparatory_problems_IChO_2013.pdf> (problems 18-21)


<http://icho2014.hus.edu.vn/Preparatory-Problems/0001/01/Preparatory-Problems-224.html> (problems 18-26)


 6

Janice G. Smith's textbook "Organic Chemistry", while unfortunately expensive, has a good interactive workbook online which is useful even without the companion text.


You can find it [here](http://highered.mheducation.com/sites/0072397462/student_view0/index.html).


 2

I would recommend doing textbook problems e.g. those of David Klein and Clayden. In addition, it might be useful to refer to MIT open courseware's organic problems. I have included their links:


<https://ocw.mit.edu/courses/chemistry/5-12-organic-chemistry-i-spring-2003/>
<https://ocw.mit.edu/courses/chemistry/5-12-organic-chemistry-i-spring-2005/>


These problems might be old, but I still found them useful... As for which year to do, I don't think it matters too much


 2