The use of manganese triacetate as an oxidant component in the C-4 arylations of 2-aryl-quinazoline 3-oxides with arylboronic acids­ is reported. The new protocol was applied to prepare new 2,4-di­arylated quinazoline 3-oxides in good to high yields. The method was shown to tolerate various substituents on both aromatic rings, and no complications such as deoxygenation or rearrangement to quinazolin-4(3H)-one was observed.

中文翻译：

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Mn(OAc)3 诱导喹唑啉 3-氧化物与芳基硼酸的 C-4 芳基化

据报道，在 2-芳基-喹唑啉 3-氧化物与芳基硼酸的 C-4 芳基化反应中，使用三乙酸锰作为氧化剂组分。新方案用于制备新的 2,4-二芳基化喹唑啉 3-氧化物，收率良好至高。该方法被证明可以耐受两个芳环上的各种取代基，并且没有观察到脱氧或重排为喹唑啉-4(3H)-one 等并发症。