期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 20, 期 36, 页码 7302-7315出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ob01260j
关键词
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资金
- IIT Guwahati
- DST-INSPIRE [IF180252]
- Department of Science and Technology, New Delhi [CRG/2018/002120/OC]
- Ministry of Human Resource and Development under the COE-FAST program [5-5/2014-TS VII]
- Department of Science and Technology, New Delhi under the DST-FIST program [SR/FST/CS-II/2017/23C]
- NECBH, IIT Guwahati [BT/COE/34/SP28408/2018]
A regioselective synthetic strategy for 6-aryl-8,9-dihydrobenzo[c]phenanthridine-10(7H)-ones was accomplished by fine-tuning the reaction temperature. The strategy involved introducing a carbonyl functionality regioselectively at the C-10 position of the benzophenanthridine backbone via a one-pot four-component reaction. Additionally, some compounds were identified as potential 'naked eye' colorimetric chemosensors for fluoride, with reversible properties suitable for combinatorial INHIBIT logic gate formulation.
A regioselective synthetic strategy for 6-aryl-8,9-dihydrobenzo[c]phenanthridine-10(7H)-ones (4) is accomplished using a one-pot four-component reaction by fine-tuning the reaction temperature. DMSO is excellently used as a reactant-cum-solvent to introduce a carbonyl functionality regioselectively at the C-10 position of the benzophenanthridine backbone, via an MCR, which is unknown yet. The elegant features of this strategy are the formation of two C-C, one C-N, and one C=O bonds in a single step, without using a base and an activator for the oxygenation process. Then, a few compounds (4) are easily aromatised to achieve 6-arylbenzo[c]phenanthridin-10-ol derivatives (7) using I-2/DMSO at 100 degrees C. Nay, a dangling hydroxyl group in 4s, 4u, 4x, and 4z helped them to be employed as promising 'naked eye' colorimetric chemosensors for fluoride with limits of detection of 0.65, 0.60, 0.34, and 2.2 ppm, respectively. Moreover, the reversibility of the chemosensors makes them suitable for combinatorial INHIBIT logic gate formulation. The compounds have also been employed for solid-state F- detection via the spot TLC test.
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