Nengneng Zhou, Yixiang Cheng, Jin Xie and Chengjian Zhu
Chem. Commun., 2017,53, 10707-10710
DOI:
10.1039/C7CC06548E,
Communication
A photosensitizer-free, highly efficient sunlight-promoted tandem [3+2]/[4+2] annulation of unsaturated α-bromocarbonyls with o-alkynylanilines was developed, and allowed for convenient synthesis of fused benzobicyclic skeletons. The reaction was clean and practical in mild conditions and showed excellent functional group compatibility.