An efficient route to 1,8-dioxo-octahydroxanthenes and -decahydroacridines using a sulfated zirconia catalyst
作者:Sandeep S. Kahandal、Anand S. Burange、Sandip R. Kale、Pepijn Prinsen、Rafael Luque、Radha V. Jayaram
DOI:10.1016/j.catcom.2017.03.017
日期:2017.7
Sulfated zirconia results to be a very efficient catalyst for the synthesis of 1,8-dioxo-octahydroxanthenes and 1,8-dioxo-decahydroacridines without tedious work-up procedures. While 1,8-dioxo-octahydroxanthenes are prepared from aldehyde and 5,5-dimethyl-1,3-cyclohexenedione (dimedone), 1,8-dioxo-decahydroacridines are prepared from this reactant mixture with amines. This method provides a mild catalytic
Synthesis of 1,8-Dioxo-Decahydroacridines using Pyridinium Hydrogen Sulfate Ionic Liquid as an Green, Efficient and Reusable Catalyst
作者:Somaye Karimian、Hassan Tajik
DOI:10.2174/1570178613666160104232735
日期:2016.2.10
amine (1 mmol), PHSIL (0.65 mmol), CH3CN (3 mL) at 80°C, a series of 1,8-dioxo-decahydroacridines were synthesized via the one-pot three component reaction between various aromatic aldehydes and amines with dimedone. The aromatic aldehydes containing electrondonating and electron-withdrawing groups afforded 1,8-dioxo-9-aryl-10-aryl-decahydroacridines with high yields within short reaction times in
Ahluwalia; Sahay, Ranjana; Das, Umashankar, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1996, vol. 35, # 11, p. 1211 - 1213
作者:Ahluwalia、Sahay, Ranjana、Das, Umashankar
DOI:——
日期:——
Competitive One-Pot Reactions: Simultaneous Synthesis of Decahydroacridine-1,8-diones and 1,8-Dioxo-octahydroxanthenes and Photophysical Characterization
作者:Sugey M. Martinez Gomez、Diego M. Alzate Sanchez、William Rodríguez-Córdoba、Cesar A. Sierra、Cristian Ochoa-Puentes
DOI:10.1080/00397911.2013.831903
日期:2014.3.4
A simple and convenient one-pot method for simultaneously obtaining decahydroacridine-1,8-diones and 1,8-dioxo-octahydroxanthene derivatives is described. A high conversion yielding both products was obtained under the reaction conditions. To understand the optical behavior of the model compounds and their potential use as antenna moieties in bichromophoric systems, the photophysical properties of all samples were studied using ultraviolet-visible absorption and steady-state fluorescence spectroscopy in methanol solutions. For the case of the acridinediones, the fluorescence spectra were found to exhibit the typical emission profile of the locally excited state, whereas, contrary to previous published experimental results, reliable fluorescence emission spectra for the xanthenes derivatives could not be obtained. On the other hand, the poor quantum yields of the synthesized decahydroacridine-1,8-diones were explained based on the benzene-like substitution effect, which favors the intersystem crossing relaxation mechanism. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) for the following free supplemental resource(s): Full experimental and spectral details.]