How can we confirm that the peaks within 42-53 ppm in 13C-NMR correspond to quarternary carbon?

Dear Researchers, I got several peaks within 42-53 ppm in the 13C-NMR diagram. My system contains vinylic carbon atoms. I am suspecting the presence of quarternary carbon in the system. Can I...

12 December 2017 5,596 6 View