Problem: How many kinds of chemically non-equivalent hydrogens are there in each of the following compounds?a) Phenobarbital (tranquilizer) b) Hydrolysis product of the Solanceae alkaloid Atropine

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FREE Expert Solution

For this problem, we need to determine how many kinds of chemically non-equivalent Hs in each of the ff. compounds


  • Recall that for 1H-NMR analysis, there are as many signals on each spectrum as there are unique, non-equivalent protons
  • In this case, let's assume that Hs bound to the same C is equivalent 
  • Take note that symmetry will reduce the total number of signals
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Problem Details

How many kinds of chemically non-equivalent hydrogens are there in each of the following compounds?

a) Phenobarbital (tranquilizer) 

b) Hydrolysis product of the Solanceae alkaloid Atropine