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Beilstein J. Org. Chem. 2011, 7, 1327–1333, doi:10.3762/bjoc.7.156
Graphical Abstract
Scheme 1: Desymmetrising metallation for the enantioselective synthesis of atropisomers.
Scheme 2: Benzylic lithiation of a diaryl ether.
Scheme 3: Benzylic metallation of a diaryl ether α to a carbamate.
Scheme 4: Diastereo- and enantioselective synthesis of atropisomeric ethers by benzylic lithiation.
Scheme 5: Atroposelective stannylation.
Scheme 6: Stereospecific tin–lithium exchange/quench reactions.
Scheme 7: Proposed stereochemical pathway.