Axially Chiral Cyclic Phosphoric Acid Enabled Enantioselective Sequential Additions.
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DOI: 10.1021/acs.orglett.8b04012
Abstract: Efficient axially chiral cyclic phosphoric acid catalyzed enantioselective sequential additions of 2-aryl-3 H-indol-3-ones, aldehydes, and diethyl 2-aminomalonate have been developed, and a new type of nitrogen-containing heterocyclic compounds, 2,3-dihydro-1 H-imidazo[1,5- a]indol-9(9a H)-one derivatives, were prepared… read more here.
Keywords: cyclic phosphoric; phosphoric acid; chiral cyclic; enantioselective sequential ... See more keywords