Hydrogen-atom Abstraction/Cyclization in synthesis. Direct syntheses of coumestan and coumestrol
The synthesis of coumestrol has been achieved in five steps from 1, 3-dimethoxybenzene. The key step is a photochemical cyclization of a glyoxylate ester.
Kraus
GA
Department of Chemistry and Program in Toxicology, Iowa State University, Ames, Iowa 50011, USA.
Zhang
N