Cycloaddition reactions play a pivotal role in synthetic chemistry for the direct assembly of cyclic architectures. However, hurdles remain for extending the C4 synthon to construct diverse heterocycles via programmable [4+n]-cycloaddition. Herein, the authors report an intermolecular cycloaddition using furan-fused cyclobutanones as a C4 synthon.
- Kemiao Hong
- Mengting Liu
- Xinfang Xu
