作者:Gary A. Cartwright、Robert O. Gould、Hamish McNab
DOI:10.1039/a702395b
日期:——
2-Oxopyran-5-carbaldehydes (e.g. 3) containing a trapping
group in the 5-position rearrange thermally by a sequence involving
electrocyclic ring opening, E/Z isomerisation and ring closure; a
similar strategy has enabled the first cases of thermal interconversion of
pyran-2-ones and 2-pyridones, and of automerisation of 2-pyridones to be
identified.
在 5 位含有捕获基团的 2-氧代吡喃-5-羰基醛(如 3)通过电环开环、E/Z 异构化和闭环等一系列过程进行热重排;类似的策略使我们首次发现了吡喃-2-酮和 2-吡啶酮的热相互转化以及 2-吡啶酮的自动转化。