69246-00-0Relevant academic research and scientific papers
Highly efficient acetalization of carbonyl compounds catalyzed by anilin-aldehyde resin salts
Tanemura, Kiyoshi,Suzuki, Tsuneo
supporting information, p. 797 - 799 (2015/06/22)
A mild procedures for the syntheses of ethylene acetals and dimethyl acetals from the corresponding aldehydes and ketones catalyzed by 1mol% of anilinealdehyde resin salts are described. This method is also useful for the synthesis of dimethyl acetals of diaryl ketones.
Allylsilane and diallylsilane reactions with functionalized ethylene ketals or benzodioxoles
Galy, Nicolas,Moraleda, Delphine,Santelli, Maurice
experimental part, p. 1448 - 1455 (2011/03/22)
The bis-allylation of ethylene ketal and catechol ketal derivatives of 2,5-hexanedione occurred with a great stereoselectivity. The tetraallylation of bis-catechol ketal derivatives of 2,5-hexanedione and 2-methyl-1,3- cyclohexanedione or the diallylation of 4-phenylbutan-2-one derivatives arise in good yields and these compounds were suitable substrates for ring-closing metathesis leading to 4,4-dialkylcyclopentenes. Condensation of 1,8-bistrimethylsilyl-2,6-octadiene (Bistro) with 4-phenylbutan-2-one catechol ketal derivatives or 2-methylcyclohexan-1,3-dione mono catechol ketal afforded in good yields cyclic and tricyclic products 12 or 23, respectively.
A remarkable iodine-catalyzed protection of carbonyl compounds
Banik, Bimal K.,Chapa, Marin,Marquez, Jocabed,Cardona, Magda
, p. 2341 - 2343 (2007/10/03)
We report here a remarkably simple molecular iodine-catalyzed protection method for various carbonyl compounds as ketals in a general reaction. The iodine-catalyzed reaction of mandelic acid and lactic acid with several aldehydes has furnished a highly diastereoselective synthesis of cis and trans dioxolanones.
Highly efficient and chemoselective interchange of 1,3-oxathioacetals and dithioacetals to acetals promoted by N-halosuccinimide
Karimi, Babak,Seradj, Hassan,Maleki, Jafar
, p. 4513 - 4516 (2007/10/03)
Highly efficient interconversion of a range of 1,3-oxathiolanes, 1,3-dithiolanes and 1,3-dithianes to their acetals at ambient temperature using N-bromosuccinimide or N-chlorosuccinimide and different types of alcohols and diols was investigated.
Microwave promoted acetalization of aldehydes and ketones
Moghaddam,Sharifi
, p. 2457 - 2461 (2007/10/02)
Aldehydes and ketones are readily acetalized under microwave irradiation with ethylene glycol in the presence of p-toluenesulfonic acid(PTSA), ferric(III) chloride or acidic alumina.
Regioselective Alkylation of 1,3-Dioxolan-2-ylium Cation Derived from α,β-Unsaturated Aldehyde Ethylene Acetal with Lithium Organo Compounds
Mukaiyama, Teruaki,Hayashi, Yujiro,Hashimoto, Yukihiko
, p. 1627 - 1630 (2007/10/02)
1,3-Dioxolan-2-ylium cations derived from α,β-unsaturated aldehyde ethylene acetals regioselectively react with lithium organocuprate and lithium organoaluminate to give the corresponding esters and ketals, respectively.
SYNTHESIS OF DIMETHYL ACETALS, DIETHYL ACETALS, AND CYCLIC ACETALS CATALYZED BY AMINOPROPYLATED SILICA GEL HYDROCHLORIDE (APSG*HCl)
Gasparrini, F.,Giovannoli, M.,Misiti, D.,Palmieri, G.
, p. 1491 - 1500 (2007/10/02)
The aminopropylated Silica-Gel hydrochloride (APSG*HCl) proved to be an efficient catalyst for the rapid conversion of carbonyl compounds in the corresponding acetals with high yields and in mild and selective conditions.In addition to the obvious advantages offered by heterogeneous catalysis, the present method results very useful when the presence of a weakly-acidic function chemically bonded on the catalyst surface (alkyl ammonium salt) is necessary (compounds which contains functions unstable in acidic media).
