Synthesis, NMR conformational analysis and pharmacological evaluation of 7,7a,13,14-tetrahydro-6H-cyclobuta[b]pyrimido[1,2-a:3,4-a′]diindole analogues as melatonin receptor ligands
Synthesis, NMR conformational analysis and pharmacological evaluation of 7,7a,13,14-tetrahydro-6H-cyclobuta[b]pyrimido[1,2-a:3,4-a′]diindole analogues as melatonin receptor ligands
Photocatalytic Alkylation of Pyrroles and Indoles with α-Diazo Esters
作者:Łukasz W. Ciszewski、Jakub Durka、Dorota Gryko
DOI:10.1021/acs.orglett.9b02612
日期:2019.9.6
electron-rich aromatic compounds with diazo esters. C-2-alkylated indoles and pyrroles are obtained with good yields even though the photocatalyst loading is as low as 0.075 mol %. For EWG-substituted substrates, the addition of a catalytic amount of N,N-dimethyl-4-methoxyaniline is required. Both EWG-EWG- and EWG-EDG-substituted diazo esters are suitable as alkylatingagents. The reaction selectivity and mechanistic
Versatile synthesis of functionalized β- and γ-carbolines <i>via</i> Pd-catalyzed C–H addition to nitriles/cyclization sequences
作者:Ting-Ting Wang、Di Zhang、Wei-Wei Liao
DOI:10.1039/c8cc00040a
日期:——
The first example of versatile synthesis of functionalized β-carbolines and γ-carbolines via redox-free Pd-catalyzed C–H addition of indole to nitrile/cyclization sequences is reported. A wide range of functionalized β-carbolines and γ-carbolines can be prepared from readily accessible indoles and nitriles in good to excellent yields under the optimal conditions.