Construction of Spirocyclic Tetrahydro-β-carbolines via Cross-Annulation of Phenols with Tryptamines in Water
作者:Zemin Wang、Jiabin Niu、Huiying Zeng、Chao-Jun Li
DOI:10.1021/acs.orglett.9b02613
日期:2019.9.6
degradation of lignin resource. Palladium-catalyzed conversion of phenols to tetrahydro-β-carboline skeletons bearing a spirocycle at the C-1 position in water is reported. Various substituted phenols are successfully cross-annulated with different tryptamines via sequential C(Ar)-O bondcleavage of phenols, C-H bond activation of tryptamines, and C-N/C-C bond formations. This method provides a new protocol