Journal of Organic Chemistry p. 5672 - 5680 (1994)
Update date:2022-07-29
Topics:
Denmark
Thorarensen
A short and efficient asymmetric synthesis of the pyrrolizidine necine base (-)-hastanecine is described. The key reaction in the synthesis is a sequential inter [4 + 2]/inter [3 + 2] cycloaddition. The Lewis acid promoted [4 + 2] cycloaddition between 2-
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