The Morita–Baylis–Hillman adducts of β-aryl nitroethylenes with other activated alkenes: synthesis and anticancer activity studies
作者:Mamta Dadwal、Renu Mohan、Dulal Panda、Shaikh M. Mobin、Irishi N. N. Namboothiri
DOI:10.1039/b512267h
日期:——
The Morita-Baylis-Hillman (MBH) adducts of beta-aryl nitroethylenes with methyl vinyl ketone (MVK) and acrylate, formed in moderate to good yield when mediated by imidazole/LiCl in THF at room temperature, inhibit HeLa cell proliferation by binding to tubulin.
Organocatalytic formal [5+1] annulation: diastereoselective cascade synthesis of functionalized six-membered spirocyclic indane-1,3-diones/oxindoles via Michael–aldol reaction
作者:Suparna Roy、Mamatha Amireddy、Kwunmin Chen
DOI:10.1016/j.tet.2013.07.084
日期:2013.10
An efficient cascade protocol has been developed for the diastereoselective synthesis of functionalized six-membered spirocyclic compounds. The reaction proceeded smoothly between indane 1,3-diones/oxindoles/coumaranone as the dinucleophilic components and (E)-5-nitro-6-aryl-hex-5-en-2-one as the dielectrophile to give the desired products with reasonable to high chemical yields (30-84%) and high levels of diastereoselectivities (upto >95:5 dr). The reaction proceeded smoothly via cascade Michael aldol reaction. (C) 2013 Elsevier Ltd. All rights reserved.
Rauhut–Currier type homo- and heterocouplings involving nitroalkenes and nitrodienes
作者:Pramod Shanbhag、Pradeep R. Nareddy、Mamta Dadwal、Shaikh M. Mobin、Irishi N. N. Namboothiri
DOI:10.1039/c0ob00062k
日期:——
Reaction of nitroalkenes or nitrodienes with methyl vinyl ketone (MVK) or acrylate in the presence of the imidazole–LiCl catalyst system provides Rauhut–Currier (vinylogous Morita–Baylis–Hillman) adducts in moderate yield. Under similar conditions (imidazole–hydroquinone), nitroalkenes and nitrodienes undergo self-dimerization to afford the Rauhut–Currier adducts in varying yields. An alternative