氧离子
化学
戒指(化学)
叶立德
组合化学
催化作用
功能群
离子键合
反应条件
转化(遗传学)
立体化学
有机化学
生物化学
基因
离子
聚合物
作者
Dan Qi,Jinrui Bai,Zhuoheng Song,Bin Li,Chao Yang,Lin Guo,Wujiong Xia
出处
期刊:Organic Letters
[American Chemical Society]
日期:2023-01-13
卷期号:25 (3): 506-511
被引量:5
标识
DOI:10.1021/acs.orglett.2c04218
摘要
A versatile photochemical ring-expansion protocol for the synthesis of oxacyclic spirooxindoles under catalyst-free conditions is described. The reaction is enabled by the use of unstrained O-containing heterocycles with 3-diazoindolin-2-ones under visible-light irradiation. Several synthetic advantages for this method are exhibited, including mild conditions, good functional group tolerance, operational simplicity, and scalability. Mechanistic studies indicate that the transformation may proceed through the formation of oxonium ylide intermediate followed by an ionic cyclization.
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