I think that this would be a very good precursor.
You could slightly oxidize the alcohol into a aldehyde group and then go the Schriff Base route.
3,4-di MeO-C6H3-CH2-CH2OH + NaOCl dripped into an acidic medium --> 3,4-di MeO-C6H3-CH2-CH=O
3,4-Di MeO-C6H5-CH2-CH=O + NH2R --> 3,4-Di MeO-C6H5-CH2-CH=NHR --( H2)--> 3,4-Di MeO-C6H5-CH2-CH2NHR
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