Microwave-Assisted Solid-Acid-Catalyzed Friedel-Crafts Alkylation and Electrophilic Annulation of Indoles Using Alcohols as Alkylating Agents
作者:Béla Török、Aditya Kulkarni、Phong Quang
DOI:10.1055/s-0029-1217052
日期:2009.12
Alcohols are considered environmentally benign alkylating agents since the only by-product generated in their reactions is water. Herein, we report a microwave-assisted Friedel-Crafts alkylation and electrophilic annulation of indoles using alcohols as alkylating agents. Alkylation of indoles using tert-butyl alcohol gives 3-substituted tert-butylindoles. A domino electrophilic annulation/aromatization of indoles using hexane-2,5-diol results in the formation of substituted carbazoles. The reaction is catalyzed by a strong, solid-acid catalyst montmorillonite K-10. The products were obtained in good yields and high selectivities.
Solvent-Free Solid Acid-Catalyzed Electrophilic Annelations: A New Green Approach for the Synthesis of Substituted Five-Membered N-Heterocycles
作者:Mohammed Abid、Andrew Spaeth、Béla Török
DOI:10.1002/adsc.200606200
日期:2006.10
An effective microwave-induced, solid acid-catalyzed, environmentally benign synthesis of substituted pyrroles, indoles and carbazoles under solvent-free conditions is described. The new synthetic methodology is based on the use of a considerably strong solid acid, K-10 montmorillonite. Both the cyclialkylation of amines and annelation of pyrroles and indoles have been completed within minutes and
its use was almost dismissed. Many efforts were made in order to design and synthesise new carbazole derivatives with good activity and reduced side effects. The major goal of the present study was to synthesise a series of new N-thioalkylcarbazole derivatives with anti-proliferative effects. Two compounds, 5a and 5c, possess an interesting anti-proliferative activity against breast and uterine cancer
[EN] USE OF CARBAZOLE-PHENONE DERIVATIVES FOR TREATING CANCER<br/>[FR] UTILISATION DE DÉRIVÉS DE CARBAZOLOPHÉNONE POUR LE TRAITEMENT DU CANCER
申请人:CENTRE NAT RECH SCIENT
公开号:WO2013121385A1
公开(公告)日:2013-08-22
La présente invention concerne des dérivés de carbazolophénone de formule (I) : (I) et leur mise en oeuvre comme médicaments, et notamment pour prévenir et/ou traiter le cancer.
New Trimethoxybenzamides and Trimethoxyphenylureas Derived from Dimethylcarbazole as Cytotoxic Agents. Part I
A convenient synthesis of novel functionalized 1,4-dimethylcarbazole derivatives containing 3,4,5-trimethoxybenzamido-ureido or N-(3,4,5-trimethoxyphenyl)ureido group starting from their corresponding indole derivatives is reported. Three derivatives prepared (, , and ) were active against leukemia cell lines HL60. Both and showed potent antiproliferative activity against KB cell lines, likely associated