Total Synthesis of (±)-Minfiensine via a Formal [3+2] Cycloaddition.

(±)-Minfiensine (1) was synthesized in 10 steps in 26% overall yield with the 1,2,3,4-tetrahydro-9a,4a-iminoethanocarbazole core constructed through a [3+2] cycloaddition reaction between indole and an azaoxyallylic cation.