AbstractRu-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 [RuCl2(1,5-COD)]x and phosphines [PPh3 or P(p-chlorophenyl)3] or SbPh3. Of particular importance is the almost quantitative elimination of
A selective and convenient ruthenium mediated method for the synthesis of mixed acetals and orthoesters
作者:Stanisław Krompiec、Robert Penczek、Nikodem Kuźnik、Jan Grzegorz Małecki、Marek Matlengiewicz
DOI:10.1016/j.tetlet.2006.10.138
日期:2007.1
and phenols to O-allyl compounds (allyl ethers and acroleinacetals), catalyzed by [RuCl2(PPh3)3], was examined. Intramolecular addition of an OH group, leading to the formation of cyclicacetals and orthoesters, was also investigated. As a result, a new, selective and convenient method for the synthesis of symmetrical and unsymmetrical (mixed) acetals and orthoesters was developed.