2023
DOI: 10.1021/acs.joc.3c01446
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Light-Driven Two-Step Preparation of 4-Chromanone Fused to Estrone Derivatives

Matías I. Quindt,
Gabriel F. Gola,
Javier A. Ramirez
et al.

Abstract: A protocol involving the irradiation of some 3-(2-alkenyl)estrone and 3-(2-alkenyl)-17-norestrone derivatives under a nitrogen atmosphere in organic solvents (both hexane and MeOH) followed by base-mediated intramolecular oxa-Michael cyclization reaction was investigated under steady-state conditions. The solvent effect and nature of the acyl group on the preparative photoreaction were studied and the multiplicity of the excited state was also demonstrated. The ortho-regioisomers were obtained in modest to goo… Show more

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