作者:Tim Carlo Allmann、Rares-Petru Moldovan、Peter G. Jones、Thomas Lindel
DOI:10.1002/chem.201503695
日期:2016.1.4
Reaction of pyrrole‐2‐carboxamides with Selectfluor in MeCN/water (4:1) affords 2‐hydroxy‐5‐oxopyrrole‐2‐carboxamides in yields of up to 80 %. A variety of sensitive functional groups is tolerated, among them aldehydes and alkynes. The new method also works in the presence of allyl groups and appears to be superior to the use of singlet oxygen. Reaction of the monobrominated dihydropyrrolo[1,2‐a]pyrazinone
吡咯-2-羧酰胺与Selectfluor在MeCN /水中的反应(4:1)得到2-羟基-5-氧代吡咯-2-酮的酰胺,收率高达80%。可以耐受各种敏感的官能团,其中包括醛和炔烃。新方法也可在烯丙基存在下使用,并且似乎优于单线态氧的使用。的单溴化二氢吡咯并[1,2的反应一]吡嗪酮mukanadin C及其非溴化类似物,得到双环hydroxypyrrolones。这些化合物很有趣,因为它们构成了海洋天然产物氧代环苯乙烯基的一部分结构。