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Beilstein J. Org. Chem. 2011, 7, 1739–1744, doi:10.3762/bjoc.7.204
Graphical Abstract
Scheme 1: Retrosynthetic pathways to 3,5-disubstituted indenes bearing two functional groups: Indenylsulfonam...
Scheme 2: Reagents and conditions: (i) (a) EtOAc, LHMDS, THF, −78 °C, (b) H2SO4, H2O, 60 °C [18]; (ii) (a) SOCl2,...
Scheme 3: Reagents and conditions: (i) (a) EtOAc, LHMDS, THF, −78 °C, (b) H2SO4, H2O, 60 °C [18]; (ii) (a) SOCl2,...
Scheme 4: Reagents and conditions: (i) KNO3, H2SO4, −5 °C; (ii) (a) EtOAc, LHMDS, THF, −78 °C, (b) H2SO4, H2O...
Figure 1: Key NMR responses for compounds 17, 19 and 23: 1D NOESY experiments.