Zinc triflate catalyzed 1,3-indolylation of cyclohexanones: tandem condensation, dehydrogenation and aromatization sequence?
Organic & Biomolecular Chemistry Pub Date: 2020-03-05 DOI: 10.1039/D0OB00163E
Abstract
1,3-Bis(1-alkyl-1H-indol-3-yl)benzene derivatives have been synthesized through a Zn(OTf)2 catalyzed reaction between cyclohexanones and indoles. Cyclohexanones act as an aryl source via an alkylation–dehydrogenation–aromatization sequence, and undergo regioselective C–C bond formation with indoles at the 1,3-position. A useful library of these derivatives obtained in moderate to high yields has been prepared and a tentative mechanism has been proposed based upon GCMS analysis and time dependent NMR studies.
Recommended Literature
- [1] Emerging 2D hybrid nanomaterials: towards enhanced sensitive and selective conductometric gas sensors at room temperature Hanie Hashtroudi,Ian D. R. MackinnonJ. Mater. Chem. C, 2020,8, 13108-13126 10.1039/D0TC01968B
- [2] Evolutionary approaches in protein engineering towards biomaterial construction Brindha J.,Balamurali M. M.,Kaushik ChandaRSC Adv., 2019,9, 34720-34734 10.1039/C9RA06807D
- [3] Excited state potential energy surfaces and their interactions in FeIVO active sites Shaun D. Wong,Edward I. SolomonDalton Trans., 2014,43, 17567-17577 10.1039/C4DT01366B
- [4] Evolved polymerases facilitate selection of fully 2′-OMe-modified aptamers? Zhixia Liu,Tingjian Chen,Floyd E. RomesbergChem. Sci., 2017,8, 8179-8182 10.1039/C7SC03747C
- [5] Excited-state proton-coupled electron transfer within ion pairs? Gerald J. Meyer,Leif Hammarstr?mChem. Sci., 2020,11, 3460-3473 10.1039/C9SC04941J
- [6] Fc microparticles can modulate the physical extent and magnitude of complement activity? David White,Sean R. StowellBiomater. Sci., 2017,5, 463-474 10.1039/C6BM00608F
- [7] Dissociative electron attachment to HGaF4 Lewis–Br?nsted superacid Marcin Czapla,Jack SimonsPhys. Chem. Chem. Phys., 2018,20, 21739-21745 10.1039/C8CP04007A
- [8] Elusive 2-aminofuran Diels–Alder substrates for a straightforward synthesis of polysubstituted anilines? Ana G. Neo,Ana Bornadiego,Jesús Díaz,Stefano Marcaccini,Carlos F. MarcosOrg. Biomol. Chem., 2013,11, 6546-6555 10.1039/C3OB41411F
- [9] Evidence for the intrinsic nature of band-gap states electrochemically observed on atomically flat TiO2(110) surfaces? Shintaro Takata,Yoshihiro MiuraPhys. Chem. Chem. Phys., 2014,16, 24784-24789 10.1039/C4CP03280B
- [10] Fe/S-Catalyzed synthesis of 2-benzoylbenzoxazoles and 2-quinolylbenzoxazoles via redox condensation of o-nitrophenols with acetophenones and methylquinolines? Thi Thu Tram Nguyen,Thanh Binh NguyenOrg. Biomol. Chem., 2021,19, 6015-6020 10.1039/D1OB00976A
Journal Name：Organic & Biomolecular Chemistry
research_products
-
CAS no.: 89640-58-4
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.png)
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid](https://ossimg.kuujia.com/scimg/2138500/2138166-62-6x500.png)
![2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide](https://ossimg.kuujia.com/scimg/2034500/2034271-14-0x500.png)