From Conjugated Tertiary Skipped Diynes to Chain-Functionalized Tetrasubstituted Pyrroles
作者:David Tejedor、Sara López-Tosco、Javier González-Platas、Fernando García-Tellado
DOI:10.1002/chem.200802262
日期:2009.1.12
Privileged scaffolds: Breaking the symmetry of 1,4‐diyne scaffolds by nucleophilic amine addition onto one of two equivalent alkynoate units affords chain‐functionalized tetrasubstituted pyrroles with five points of functional diversity and two points for complexity generation. The domino reaction manifold entails an aza‐Michael addition, a 5‐endo‐digonal cyclization, and a [3,3]‐sigmatropic rearrangement
特权支架:通过将亲核胺添加到两个等效的炔酸单元之一上来破坏1,4-二炔支架的对称性,可得到链官能化的四取代吡咯,具有五个功能多样性点和两个复杂度生成点。多米诺反应歧管需要进行氮杂-迈克尔加成反应,5-内-数字环化和[3,3]-σ重排。