Visible-Light-Mediated Cyclopropanation Reactions of 3-Diazooxindoles with Arenes
2021
Zhao, Shuai | Chen, Xiang-Xiang | Gao, Nan | Qian, Mingcheng | Chen, Xin
The cyclopropanation reaction of 3-diazooxindoles with arenes was first accomplished using visible-light irradiation. A series of spiro[norcaradiene-7,3′-indolin]-2′-ones were synthesized for the first time in high yields and with excellent diastereoselectivities. The synthetic usefulness of this catalyst-free photochemical methodology is illustrated by the further controllable rearrangement and epoxidation reactions.
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