Topic: NMR diastereomers (Read 14413 times)

CHEKAL · « **Reply #15 on:** January 06, 2013, 05:36:41 PM »

most lines are doublets yes, does that mean a triplet would have 6 peaks too?

discodermolide · « **Reply #16 on:** January 06, 2013, 05:38:28 PM »

A triplet has three peaks, in a 1:2:1 ratio.

CHEKAL · « **Reply #17 on:** January 06, 2013, 05:40:11 PM »

then which peaks would appear as doublets due to coupling between the different configurations?

discodermolide · « **Reply #18 on:** January 06, 2013, 05:44:24 PM »

Each of the protons on the aziridine ring will appear as a doublet, integrating for 1H.

CHEKAL · « **Reply #19 on:** January 06, 2013, 05:49:50 PM »

oh i see! thanks

does this mean the difference in hight between the two peaks would give an approximate ratio of the two configurations in the yield?

discodermolide · « **Reply #20 on:** January 06, 2013, 05:51:12 PM »

Yes that is correct. If you measure the integrals you can estimate the proportions of each diastereoisomer.