The unprecedented dearomative migratory rearrangement reactions of 2-oxypyridines with N-sulfonyl-1,2,3-triazoles have been developed under rhodium catalysis, providing a reliable and efficient protocol for accessing N-substituted 2-pyridones. These two distinct rearrangements feature the controllable 1,4-migration of a carbonate group from O-to-C as well as the O-to-N 1,6-migration of an acyl group via α-imino rhodium carbene transfer. Moreover, the reaction of pyridotriazoles with 2-oxypyridines delivers the 1,4-migration products in high efficiency.

中文翻译：

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α-亚氨基铑卡宾引起的2-氧吡啶的脱芳香族迁移重排

在铑催化下已经开发了2-氧吡啶与N-磺酰基-1,2,3-三唑的空前的脱芳香族迁移重排反应，为获得N-取代的2-吡啶酮提供了可靠而有效的方案。这两个不同的重排的特征是碳酸酯基团从O到C的可控制的1,4-迁移以及酰基通过α-亚氨基铑卡宾转移而从酰基的O到N的1,6-迁移。此外，吡啶并三唑与2-氧吡啶的反应以高效率递送1，4-迁移产物。