
Monatshefte fur Chemie p. 883 - 891 (1990)
Update date:2022-08-03
Topics: Synthesis Yield NMR spectroscopy
Stanetty, Peter
Koller, Herbert
Puerstinger, Gerhard
The syntheses of a series of title compounds 1 a-f bearing methyl groups in the heterocyclic part were described.Depending on the substitution pattern the Claisen rearrangement (path A) or the methodology of directed lithiations (path B) were used as the
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