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Beilstein J. Org. Chem. 2018, 14, 345–353, doi:10.3762/bjoc.14.22
Graphical Abstract
Scheme 1: One-pot preparation of 4-aryl-3-bromocoumarins 3 from 3-aryl-2-propynoic acids 1 with diphenyliodon...
Scheme 2: One-pot preparation of 3-bromo-4-phenylcoumarins 3a from 3-phenyl-2-propynoic acid (1a) with daryli...
Scheme 3: Derivatization of 3-bromo-4-phenylcoumarin.
Figure 1: ORTEP of 3-bromo-7-chloro-4-phenylcoumarin (3Da).
Scheme 4: Possible reaction pathway.