Thursday, February 10, 2011

Organic Test 1

After taking the first Organic Test I realized the hardest point for me was when the compound was given and we needed to construct either a H NMR, C NMR, or a mass spectrum of the compound. Being able to determine where exactly the peaks are suppose to go is the most difficult for that. However, one thing that I felt that would have been on the test but wasn't was radical halogenation since radical halogenation reactions occur with racemization at a stereogenic center and predicting the stereochemistry of the reaction products. In addition to this, I thought there might have been a question about chlorination versus bromination. Even though alkanes can undergo radical substitution reactions with both the Cl(2) and Br(2) chlorination and bromination both exhibit two differences which are: the fact that chlorination is faster than bromination and even though chlorination may be unselective and yielding a mixture of products; bromination is consistent for selective and only yielding one product. So with this I thought there might have been a problem where you had to draw the major product formed for when a cycloalkane is heated with Br(2).