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Synthesis
DOI: 10.1055/a-2349-6944
DOI: 10.1055/a-2349-6944
paper
Annulation Reaction of Isoquinolinium Ylides with Sulfamate-Derived Cyclic Imines toward Polycyclic 1,3-Benzoxazepine Heterocycles
Supported by: IIT Madras RF23241505CYRFER008650Supported by: Indian Institute of Technology Madras SB22231237CYETWO008189
![](https://www.thieme-connect.de/media/synthesis/0000AAM/lookinside/thumbnails/10.1055-a-2349-6944-1.jpg)
A dearomatization-guided and (3+2) cycloaddition-triggered annulation reaction of in situ formed isoquinolinium ylides with sulfamate-derived cyclic imines is reported, offering a cogent synthesis of tetracyclic 1,3-benzoxazepine frameworks in high yields. The protocol features successive ring-forming and ring-breaking events in a cascade fashion and is also scalable.
Publication History
Received: 29 May 2024
Accepted after revision: 20 June 2024
Accepted Manuscript online:
20 June 2024
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