Tetrahedron p. 3731 - 3736 (1983)
Update date:2022-09-26
Topics: Cyclization Experimental terms
Raucher, Stanley
Lawrence, Ross F.
5-Oxo-Na-tosyl-14,21-dehydrosecodine (8) was prepared by bromination of 6 followed by double dehydrobromination with ethyl aluminum dichloride in HMPA.When a dilute solution of 8 was heated, 10 was formed via intramolecular hydride transfer and cyclization.
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(2021)
