Synthesis of unsymmetrical alkyl acetals via addition of primary alcohols to allyl ethers mediated by ruthenium complexes
作者:Stanisław Krompiec、Mateusz Penkala、Ewelina Kowalska、Robert Penczek、Piotr Bujak、Witold Danikiewicz、Grzegorz Spólnik、Andrzej Kita、Iwona Grudzka
DOI:10.1007/s00706-011-0638-8
日期:2011.12
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
摘要通过将伯醇加到烯丙基醚中的钌催化的混合烷基-烷基缩醛的合成已扩展到包括长链和/或功能化的底物。这些反应的催化体系由RuCl 2(PPh 3)3和[RuCl 2(1,5-COD)] x和膦[PPh 3或P(对氯苯基)3 ]或SbPh 3生成。尤为重要的是几乎可以定量消除反缩醛化作用。加成反应是通过烯丙基络合物进行的,而不是通过烯丙基醚的异构化进行的,ROOH随后会添加到乙烯基醚中。 图形概要