Journal of Organic Chemistry p. 6149 - 6156 (2016)
Update date:2022-08-30
Topics:
Wiest, Johannes M.
Bach, Thorsten
The title compounds were prepared in a two-step sequence from 4,4-dimethoxybutyronitrile and the respective esters by Claisen condensation and subsequent Paal-Knorr pyrrole synthesis. The sequence could be performed as a one-pot procedure delivering the pyrroles in yields of 47-72% over two steps (13 examples). Intramolecular variants of the method were applied to the total synthesis of danaidal and suffrutine A from the respective trityl-protected ω-amino alkanoates.
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