Browsing by Author "Naimi-Jamal, M. Reza"

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    A straightforward, environmentally benefcial synthesis of spiro[diindeno[1,2‑b:2′,1′‑e]py ridine‑11,3′‑indoline]‑2′,10,12‑tri ones mediated by a nano‑ordered reusable catalyst
    (Nature Research, 2021) Demchuk, Oleg M.; Fathi, Mahsa; Naimi-Jamal, M. Reza; Dekamin, Mohammad G.; Panahi, Leila
    A library of new spiro[diindeno[1,2-b:2′,1′-e]pyridine-11,3′-indoline]-2′,10,12-trione derivatives has been prepared in an efficient, one-pot pseudo four-component method mediated by a reusable heterogeneous nano-ordered mesoporous SO3H functionalized-silica (MCM-41-SO3H) catalyst. Excellent yields, short reaction times, as well as convenient non-chromatographic purification of the products and environmental benefits such as green and metal-free conditions constitute the main advantages of the developed synthetic methodology. The obtained fused indole-indenone dyes would be of interest to pharmaceutical and medicinal chemistry. Furthermore, due to their sensitivity to pH changes, they could be used as novel pH indicators.