2013
Mendoza-Espinosa, D. Negrón-Silva, G. Lomas-Romero, L.; Gutiérrez-Carrillo, A.; Soto-Castro, D. Efficient Multicomponent Synthesis of mono-, bis-, and tris-1,2,3-Triazoles Supported by Hydroxy Benzene Scaffolds. Synthesis, 2013, 45, 2431-2437.
Abstract
A versatile one-pot synthesis of a series of mono-, bis- and tris-1,2,3-triazoles supported by commercially available hydroxybenzene scaffolds has been developed employing click chemistry. The multicomponent copper(I)-catalyzed 1,3-dipolar cycloaddition of sodium azide, propargyl bromide, and a para-substituted benzyl derivative yields N-benzyl-functionalized triazoles featuring several electron-donating or electron-withdrawing groups. Despite the preparation of highly substituted molecules, reaction conditions that provides good yields involved room temperature, times that oscillate between 16 and 24 hours, and catalyst loads ranging from 5?10 mol%. The present methodology could be useful for the building up of multi-triazole libraries easily tunable with donor or attractor functional
Total Syntheses of Five Indole Alkaloids from the Marine Bryozoan Flustra foliacea
Aromatic Bromination versus Oxidation of Indolylmalonates by Bromine
First Total Synthesis of ()-Flustraminol B
Synthesis of Indolylindolines Mediated by tert-BuNH2
Unimolecular rearrangements of ketene-O,O-acetals and fragmentations occurring in the gas phase
One-potsynthesis of conformationallyrestrictedspirooxindoles
The absoluteconfiguration of cuauhtemone and related compounds
Conformational studies on indole alkaloids from Flustra foliacea by NMR and molecular modeling