A Simple and Efficient Protocol to 1,2,4-Substituted Pyrroles via a Sonogashira Coupling-Acid-Catalyzed Cyclization
作者:Hongwei Zhou、Da Zhu、Jie Zhao、Yuxiu Wei
DOI:10.1055/s-0030-1261175
日期:2011.9
A facile and efficient protocol for the synthesis of 1,2,4-substituted pyrrole derivatives was developed. As a result of the ready availability of materials and the simple operation, this type of reaction should have potential utility in organic synthesis.
Palladium-catalysed aerobic oxidative Heck-type alkenylation of Csp3–H for pyrrole synthesis
作者:Lingkui Meng、Kun Wu、Chao Liu、Aiwen Lei
DOI:10.1039/c3cc42307g
日期:——
The first palladium-catalysed aerobic oxidative intramolecular alkenylation of Csp(3)-H bonds was described. The reaction conditions were mild and molecular oxygen was used as the terminal oxidant. Kinetic studies showed that the Csp(3)-H metallation step was a slow step.
Aerobic Synthesis of Pyrroles and Dihydropyrroles from Imines: Palladium(II)-Catalyzed Intramolecular CH Dehydrogenative Cyclization
作者:Zhuangzhi Shi、Mamta Suri、Frank Glorius
DOI:10.1002/anie.201300477
日期:2013.4.26
sp3ectacularly mild! An efficient PdII‐catalyzed intramoleculardehydrogenativecyclization of imines affords (dihydro)pyrrole products using molecular oxygen as the sole oxidant. This mild formal sp3‐CH functionalization allows rapid and atom‐economical assembly of (dihydro)pyrrole rings from inexpensive and readily available allylamines and ketones. A broad range of functional groups are tolerated