Synthesis of sterically hindered benzodioxane analogs of isoflavone and a study of their atropoisomerism

Article abstract of DOI:10.1007/BF01165717

Syntheses are reported for sterically hindered 2-substituted benzodioxane analogs of isoflavone. An optically active lanthanide shift reagent (LSR) was used to show that these products exist as mixtures of atropoisomers. The difference in the chemical shi