Pd(II)‐Catalyzed Tandem Enantioselective Methylene C(sp3)−H Alkenylation–Aza‐Wacker Cyclization to Access β‐Stereogenic γ‐Lactams

Herein, we describe an unprecedented cascade reaction to β‐stereogenic γ‐lactams involving Pd(II)‐catalyzed enantioselective aliphatic methylene C(sp3)−H alkenylation–aza‐Wacker cyclization through syn‐aminopalladation. Readily available 3,3′‐substituted BINOLs are used as chiral ligands, providing...

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Veröffentlicht in:Angewandte Chemie International Edition 2020-08, Vol.59 (33), p.14060-14064
Hauptverfasser: Ding, Yi, Han, Ye‐Qiang, Wu, Le‐Song, Zhou, Tao, Yao, Qi‐Jun, Feng, Ya‐Lan, Li, Ya, Kong, Ke‐Xin, Shi, Bing‐Feng
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Sprache:eng
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Zusammenfassung:Herein, we describe an unprecedented cascade reaction to β‐stereogenic γ‐lactams involving Pd(II)‐catalyzed enantioselective aliphatic methylene C(sp3)−H alkenylation–aza‐Wacker cyclization through syn‐aminopalladation. Readily available 3,3′‐substituted BINOLs are used as chiral ligands, providing the corresponding γ‐lactams with broad scope and high enantioselectivities (up to 98 % ee). An unprecedented cascade reaction to β‐stereogenic γ‐lactams involving Pd(II)‐catalyzed enantioselective aliphatic methylene C(sp3)−H alkenylation–aza‐Wacker cyclization through syn‐aminopalladation is reported. Readily available 3,3′‐substituted BINOLs are used as chiral ligands, providing the corresponding γ‐lactams with broad scope and high enantioselectivities (up to 98 % ee).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202004504