@article { ISI:000269664200021,
	title = {Catalytic synthesis of chalcone and flavanone using Zn-Al hydrotalcite adhere ionic liquid},
	journal = {Catalysis Communications},
	volume = {10},
	number = {14},
	year = {2009},
	month = {AUG},
	pages = {1881-1888},
	publisher = {ELSEVIER SCIENCE BV},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>The Claisen-Schmidt condensation of 2{\textquoteright}-hydroxy acetophenone and benzaldehyde to chalcone and flavanone show that calcined Zn-Al (6) hydrotalcite is active for this synthesis. Coating of ionic liquid {\textquoteleft}1-(tri-ethoxy-silyl-propyl)-3-methyl-imidazolium chloride{\textquoteright} on Zn-Al hydrotalcites was accomplished employing incipient wetness process and on NaY, NaX, MK-5 and silica gel employing co-condensation methodology. Impregnated IL on calcined Zn-Al (6) catalysts were characterized by XRD, SEM, BET, (13)C and (27)Al NMR analysis and the activity of these catalysts were investigated for chalcone and flavanone synthesis. (27)Al CP MAS NMR technique was used to show that interaction of IL with hydrotalcite modifies the acid-base sites and is responsible for enhancement of catalyst activity. Several aromatic aldehydes were screened to assess the general applicability of the system. (c) 2009 Published by Elsevier B.V.</p>},
	keywords = {(27)Al CP MAS NMR, chalcone, Claisen-Schmidt condensation, Flavanone, Ionic liquid, Zn-Al hydrotalcite},
	issn = {1566-7367},
	doi = {10.1016/j.catcom.2009.06.018},
	author = {Kunde, Lalita B. and Gade, Swapna M. and Kalyani, Vishwanath S. and Gupte, Sunil P.}
}
@article {47002,
	title = {Integration of heterogeneous acid and base catalysis for clean synthesis of jet-fuel precursor from carbohydrates},
	journal = {ChemistrySelect},
	volume = {5},
	year = {2020},
	month = {JAN },
	pages = {392-400},
	type = {Article},
	abstract = {<p>C-12 branched alkane fuel precursor was produced from carbohydrates using an efficient integrated solid acid and base catalysis approach involving: i) isomerisation-dehydration of carbohydrates to 5-(hydroxymethyl)furfural (HMF) over solid acid catalyst having both Lewis and Bronsted sites) in a biphasic MIBK (methylisobutylketone): water + DMSO solvent system and ii) Claisen-Schmidt condensation of crude HMF with MIBK over solid base catalyst. Initially, high yield of jet fuel precursor, (E)-1-(5-(hydroxymethyl)furan-2-yl)-5-methylhex-1-en-3-one from pure HMF and MIBK was achieved over basic CaMgAl(231) catalyst. The glucose dehydration to HMF was optimized in biphasic MIBK: H2O-NaCl: DMSO (8:1.5:0.5; v/v/v) system, with complete glucose conversion and 42\% HMF yield over Zr-Mont possessing both Lewis and Bronsted acid sites. In an integrated dehydration + Claisen-Schmidt condensation sequence, Zr-Mont catalyst was filtered off and the crude HMF with MIBK underwent Claisen-Schmidt condensation over CaMgAl(231) catalyst. The overall 32\% yield of Claisen-Schmidt condensation product was achieved from glucose. MIBK acting also as a product extractant, could be recovered upto 80\%.</p>
},
	keywords = {Claisen-Schmidt condensation, dehydration, integrated, jet-fuel precursor, renewable},
	issn = {2365-6549},
	doi = {10.1002/slct.201903735},
	author = {Shinde, Suhas and Tarade, Komal and Mitra, Gaurav and Rode, Chandrashekhar}
}
