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Intermolecular Nitrene Transfer in the [Au]‐Catalysed Reaction of 2‐Alkynylphenylazides
作者:Pawan S. Dhote、Chepuri V. Ramana
DOI:10.1002/adsc.202101412
日期:2022.3.15
2-alkynylphenylazide derivatives, employing known nitrene transfer reagents such as anthranil and its isomer 1,2-benzisoxazole, has been attempted in search of developing simple tools for product diversification. With 1,2-benzisoxazoles, the intermolecular nitrene transfer leading to quinazoline is competitive with intramolecular azidoalkyne cyclization resulting in spiro indol-3-ylidene derivatives. However,
已经尝试使用已知的氮烯转移试剂(如蒽尼及其异构体 1,2-苯并异恶唑)来中断金催化的 2-炔基苯基叠氮化物衍生物的分子内环化,以寻求开发用于产品多样化的简单工具。对于 1,2-苯并异恶唑,产生喹唑啉的分子间氮烯转移与产生螺吲哚-3-亚甲基衍生物的分子内叠氮炔环化具有竞争性。然而,在存在邻氨基苯甲酸的情况下,分子内和分子间氮烯转移过程都会产生相同的产物 indol-3-ylidene。