SCHEDULED MAINTENANCE
The first synthesis of (±)-boldine (5), by photocyclization of the (±)-bromodiphenol (1) to the (±)-spirodienone (3), followed by rearrangement to (±)-N-ethoxycarbonylnorboldine (4) and reduction with LiAlH4, is reported.
S. M. Kupchan, C. Kim and K. Miyano, J. Chem. Soc., Chem. Commun., 1976, 91 DOI: 10.1039/C39760000091
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