Atropselective Synthesis of N,C-Bis(diphenylphosphanes) from Bridged 2-Arylindoles Based on Effective Point-to-Axial Asymmetric Inductions after an Unusual Dilithiation ⊥.
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DOI: 10.1021/acs.orglett.9b03896
Abstract: An asymmetric methanolysis of glutaric anhydride and 6 ensuing steps gave veratrol-annulated dimethylcyclo-heptenone diastereomers with 99% ee; ring closures occurred by Friedel-Crafts acylations of carboxylic acids obtained by stereospecific hydrogenolyses of a pair of diastereomeric… read more here.
Keywords: bis diphenylphosphanes; diphenylphosphanes bridged; arylindoles based; synthesis bis ... See more keywords