Syntheses of C12,N13 Heterocyclic Bridged Fused Indenopyrrolocarbazoles
作者:Ted L. Underiner、John P. Mallamo、Jasbir Singh
DOI:10.1021/jo0108360
日期:2002.5.1
Tandem alkylation/cyclization of indenopyrrolocarbazole 4a, a C12 carbon analogue of indolocarbazole K252c, was carried out by general solid-phase and solution-phase methods. Alkylation of fused pyrroloindenylcarbazole 4a derivatives with appropriate monoacetals of diketones afforded the corresponding C12-substituted acetal alcohols. Acid-catalyzed cyclization of these adducts yielded C12,N13-bridged