Preparation of labelled 2‐methoxy‐3‐alkylpyrazines: synthesis and characterization of deuterated 2‐methoxy‐3‐isopropylyrazine and 2‐methoxy‐3‐isobutylpyrazine

AbstractEfficient synthetic routes for a number of deuterated analogues of 2‐methoxy‐3‐isopropylpyrazines and 2‐methoxy‐3‐isobutylpyrazines have been developed involving the condensation of glyoxal with an α‐amino acid amide followed by methylation with iodomethane. In this way [2H3]2‐methoxy‐3‐isopropylpyrazine, 2‐methoxy‐3‐isopropyl‐[2H2]pyrazine, [2H3]2‐methoxy‐3‐isopropyl‐[2H2]pyrazine, [2H3]2‐methoxy‐3‐isobutylpyrazine; 2‐methoxy‐3‐isobutyl‐[2H2]pyrazine and [2H3]2‐methoxy‐3‐isobutyl‐[2H2]pyrazine were prepared and characterized by NMR and MS. Copyright © 2002 John Wiley & Sons, Ltd.

Preparation of labelled 2‐methoxy‐3‐alkylpyrazines: synthesis and characterization of deuterated 2‐methoxy‐3‐isopropylyrazine and 2‐methoxy‐3‐isobutylpyrazine Journal Articles