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Beilstein J. Org. Chem. 2020, 16, 3015–3031, doi:10.3762/bjoc.16.251
Graphical Abstract
Figure 1: Highly-substituted five-membered carbocycle in biologically significant natural products.
Figure 2: Natural product synthesis featuring the all-carbon [3 + 2] cycloaddition. (Quaternary carbon center...
Scheme 1: Representative natural product syntheses that feature the all-carbon [3 + 2] cyclization as the key...
Scheme 2: (A) An intramolecular trimethylenemethane diyl [3 + 2] cycloaddition with allenyl diazo compound 38...
Scheme 3: (A) Palladium-catalyzed intermolecular carboxylative TMM cycloaddition [36]. (B) The proposed mechanism....
Scheme 4: Natural product syntheses that make use of palladium-catalyzed intermolecular [3 + 2] cycloaddition...
Scheme 5: (A) Phosphine-catalyzed [3 + 2] cycloaddition [17]. (B) The proposed mechanism.
Scheme 6: Lu’s [3 + 2] cycloaddition in natural product synthesis. (A) Synthesis of longeracinphyllin A (10) [41]...
Scheme 7: (A) Phosphine-catalyzed [3 + 2] annulation of unsymmetric isoindigo 100 with allene in the preparat...
Scheme 8: (A) Rhodium-catalyzed intracmolecular [3 + 2] cycloaddition [49]. (B) The proposed catalytic cycle of t...
Scheme 9: Total synthesis of natural products reported by Yang and co-workers applying rhodium-catalyzed intr...
Scheme 10: (A) Platinum(II)-catalyzed intermolecular [3 + 2] cycloaddition of propargyl ether 139 and n-butyl ...
Scheme 11: (A) Platinum-catalyzed intramolecular [3 + 2] cycloaddition of propargylic ketal derivative 142 to ...
Scheme 12: (A) Synthesis of phyllocladanol (21) features a Lewis acid-catalyzed formal intramolecular [3 + 2] ...
Scheme 13: The recent advances of [3 + 2] annulation in natural product synthesis. (A) The preparation of melo...