13002-10-3Relevant academic research and scientific papers
A selective and convenient ruthenium mediated method for the synthesis of mixed acetals and orthoesters
Krompiec, Stanis?aw,Penczek, Robert,Ku?nik, Nikodem,Ma?ecki, Jan Grzegorz,Matlengiewicz, Marek
, p. 137 - 140 (2007)
Addition of alcohols and phenols to O-allyl compounds (allyl ethers and acrolein acetals), catalyzed by [RuCl2(PPh3)3], was examined. Intramolecular addition of an OH group, leading to the formation of cyclic acetals and o
Synthesis of unsymmetrical alkyl acetals via addition of primary alcohols to allyl ethers mediated by ruthenium complexes
Krompiec, Stanislaw,Penkala, Mateusz,Kowalska, Ewelina,Penczek, Robert,Bujak, Piotr,Danikiewicz, Witold,Spolnik, Grzegorz,Kita, Andrzej,Grudzka, Iwona
experimental part, p. 1241 - 1247 (2012/06/04)
Ru-catalyzed synthesis of mixed alkyl-alkyl acetals via addition of primary alcohols to allyl ethers has been extended to include long-chain and/or functionalized substrates. The catalytic systems for these reactions were generated from RuCl2(PPh3)3 and [RuCl 2(1,5-COD)]x and phosphines [PPh3 or P(p-chlorophenyl)3] or SbPh3. Of particular importance is the almost quantitative elimination of transacetalization. The addition proceeds through allyl complexes, not via isomerization of allyl ethers - subsequent addition of ROH to vinyl ethers. The Author(s) 2011.
Reactions of trialkylalanes with cyclic acetals and orthoformates in CH2Cl2 and ClCH2CH2Cl as solvents
Gafarova,Dekhtyar',Dekhtyar',Fatykhov,Spirikhin,Vostrikova,Zlotskii,Dokichev
, p. 1003 - 1008 (2007/10/03)
Under mild conditions, trialkylalanes (Et3Al and Bu i3Al) in chlorine-containing solvents (CH 2Cl2 or ClCH2CH2Cl) react with cyclic acetals and orthoformates to form glycol monoethers and dialkylacetals, respectively, in high yields. The 1H NMR spectroscopic data demonstrate that CH2Cl2 or ClCH2CH 2Cl interacts with Bui3Al.
Method for producing enol ethers
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, (2008/06/13)
Enol ethers of the formula I where R1is an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical which may carry further substituents which do not react with acetylenes or allenes, and the radicals R, independently of one another, are hydrogen or aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radicals, which may be bonded to one another to form a ring, and m is 0 or 1, are prepared by reacting an acetal or ketal of the formula II with an acetylene or allene of the formula III or IV where R and R1have the abovementioned meanings, in the gas phase at elevated temperatures in the presence of a zinc- or cadmium- and silicon- and oxygen-containing heterogeneous catalyst.
