191. “A Short, Simple Synthesis of (±)-Monomorine”
     Jefford, C.W.; Tang, Q.; Zaslona, A.
     Helv. Chim. Acta 1989, 72, 1749-1752.

Racemic monomorine (12) is prepared in six steps in 26% overall yield from 2-butyl-1H-pyrrole and ethyl (E)-but-2-enoate by exploiting the rhodium(II)-acetate-catalyzed decomposition of (4RS)-4-(2′-butyl-1′ H-pyrrol-1′-yl)-1-diazopentan-2-one (7).

DOI : 10.1002/hlca.19890720812 

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