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Beilstein J. Org. Chem. 2020, 16, 537–543, doi:10.3762/bjoc.16.50
Graphical Abstract
Scheme 1: Proposed catalytic cycle.
Beilstein J. Org. Chem. 2015, 11, 2444–2450, doi:10.3762/bjoc.11.265
Scheme 1: Conjugate addition of alkylborane 2a to alkynoate 3a.
Scheme 2: Synthesis of five membered carbocycle.
Scheme 3: Deuterium-labeling experiment.
Figure 1: Possible mechanism.
Figure 2: Isomerization of the alkenylcopper intermediates.
Beilstein J. Org. Chem. 2011, 7, 951–959, doi:10.3762/bjoc.7.106
Figure 1: Azepine frameworks found in natural products and pharmaceuticals.
Figure 2: Semihollow-shaped triethynylphosphine L1.
Figure 3: Time–conversion profiles for the gold-catalyzed cyclization of 4a with L1, X-Phos and IPr ligands.
Scheme 1: 8-exo-dig cyclization of sulfonamide 9.
Scheme 2: Isomerization experiments of 6a.
Figure 4: Possible pathway for the gold-catalyzed conversion of 4a into 5a.