A simple 1,3-diethylurea was demonstrated to catalyze transition-metal-free arylations of unactivated aromatic C

H bonds with aryl iodides in the presence of t-BuOK. A broad range of aryl iodides with different arenes could couple in moderate to excellent yields. The mechanistic experiment results indicated that the radical is involved in this transformation.

中文翻译：

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尿素基有机催化剂催化直接碳未活化芳烃的H键芳基化

一个简单的1,3-二乙基脲被证明可以催化未活化的芳族C的无过渡金属的芳基化反应

在t -BuOK存在下，H与芳基碘化物键合。具有不同芳烃的多种芳基碘化物可以中等至极好的收率偶联。力学实验结果表明，自由基参与了这一转变。