GBALA Posted October 21, 2012 Posted October 21, 2012 I isolated a compound from plant source and it is only soluble in hot chloroform with the melting point of 60 degree. I have taken H-NMR and it clearly shows the characteristic peak of -CH2 group @ 1.2 ppm with the integration value of 69 which suggests that it could be fattyacid or hydrocarbon. But C-13 NMR gave relatively less number of peaks that is only 8 peaks in the spectrum. How can I correlate with 8 carbons and more than 70 protons. Please help me through.
crimsonpetal Posted October 22, 2012 Posted October 22, 2012 May be it is a highly symmetrical structure, with one quaternary carbon at the center and four branches each have 8 -CH2 and 1 -COOH. Just guess~~
GBALA Posted October 22, 2012 Author Posted October 22, 2012 good guess sir. But there is no possibility of COOH group. If it is highly symmetrical how can i decode the spectrum to find out the structure?
hypervalent_iodine Posted October 22, 2012 Posted October 22, 2012 By doing other NMR experiments. Try doing some COSY or HSCQ/HMBC. It would also be worth getting some mass spec data.
GBALA Posted October 22, 2012 Author Posted October 22, 2012 Yes sir i am about to carry out some mass spectra. The boiling point of this compound is 62 degree. Can it be worth if i go for GC-MS?
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now