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Beilstein J. Org. Chem. 2024, 20, 170–172, doi:10.3762/bjoc.20.16
Beilstein J. Org. Chem. 2021, 17, 2668–2679, doi:10.3762/bjoc.17.181
Graphical Abstract
Scheme 1: Selected fluorenone-type natural products.
Scheme 2: Overview of published cyclization methodologies for the synthesis of fluorenones starting from func...
Scheme 3: Preliminary considerations for the oxidative cyclization of 2-(aminomethyl)biphenyls to fluorenones....
Scheme 4: Substrate scope and yields for oxidative cyclizations of N-methyl-2-(aminomethyl)biphenyls 9a–d bea...
Scheme 5: Substrate scope for the oxidative cyclization of 2-(aminomethyl)biphenyls. Conditions: a) Boc2O, NEt...
Scheme 6: Substrate scope for the oxidative cyclization of 2-(aminomethyl)biphenyls with main focus on protec...
Scheme 7: Total synthesis of nobilone (1d). Conditions: a) TBS-Cl, imidazole, DMF, 50 °C, 18 h; b) n-BuLi, B(...
Scheme 8: Proposed mechanism for the oxidative cyclization of amines 2a and 2b to fluorenone (3).