A Novel Synthesis of Arylpyrrolo[1,2-a]pyrazinone Derivatives
作者:Fei Wang、Jiawei Wang、Shoufang Zhang
DOI:10.3390/90700574
日期:——
Some aryl-2-methyl-1-pyrrolo[1,2-a]pyrazinones were designed and prepared to study the Structure-Activity Relationships (SAR) of pyrrolo[1,2-a]pyrazinone derivatives. With methyl pyrrole-2-carboxylate as the starting material, the title compounds were prepared through N-alkylation and two novel cyclizations. Eleven aryl-2-methyl-1- pyrrolo[1,2-a]pyrazinone derivatives not previously reported in the
Oxidative N-heterocyclic carbene (NHC) catalysis for the rapid access to functionalized pyrrolo-oxazinones
作者:Arghya Ghosh、Shilpa Barik、Soumen Barik、Sayan Shee、Akkattu T. Biju
DOI:10.1016/j.tet.2021.132330
日期:2021.8
The N-heterocycliccarbene (NHC)-catalyzed intramolecular cyclization of N-substituted pyrrole 2-carboxaldehydes under oxidative conditions allowing the facile synthesis of pyrrolo-oxazinone derivatives is reported. The keys to the success of this strategy are the generation of acylazoliums using NHC and the base-mediated formation of the enolate. Subsequent intramolecular acylation of the enolate