Gold-Catalyzed Intermolecular Formal [4 + 2 + 2]-Cycloaddition
of Anthranils with Allenamides

Sun, Jiangtao

Gold-Catalyzed Intermolecular Formal [4 + 2 + 2]-Cycloaddition of Anthranils with Allenamides

Posted on 2020-07-17 - 20:13

The construction of eight-membered rings is a challenging issue due to unfavorable transannular strain and entropic barriers. We report herein a gold-catalyzed formal [4 + 2 + 2] cycloaddition reaction of anthranils with allenamides to deliver oxa-bridged eight-membered heterocycles in accepted yields with unique E/Z configuration. Moreover, the asymmetric [4 + 2 + 2] cycloaddition by using chiral phosphoramidite gold catalyst has also been conducted.

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Wang, Cheng; Xu, Guangyang; Shao, Ying; Tang, Shengbiao; Sun, Jiangtao (2020). Gold-Catalyzed Intermolecular Formal [4 + 2 + 2]-Cycloaddition of Anthranils with Allenamides. ACS Publications. Collection. https://doi.org/10.1021/acs.orglett.0c02083

https://doi.org/10.1021/acs.orglett.0c02083

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