Platinum- and gold-catalyzed hydroalkoxylation and tetramerization of propiolate esters
作者:Qian Chen、Changyuan Zhang、Chunxiao Wen、Jin Fang、Zhiyun Du、Dongling Wu
DOI:10.1016/j.catcom.2014.07.010
日期:2014.11
intermolecular additions of propiolate esters with alcohols. The reaction of propiolate esters and alcohols in the presence of PtCl2 gave (E)-vinyl ethers as the major products at 60 °C, whereas alkyl 3,3-dialkoxypropanoates were predominantly obtained when the reaction temperature was set to 80 °C. On the other hand, a novel regioselective tetramerization of propiolate esters catalyzed by AuCl3 under
发现PtCl 2可有效催化丙醇酸酯与醇的分子间加成。丙酸酯和醇在PtCl 2存在下的反应在60°C下以(E)-乙烯基醚为主要产物,而当反应温度设置为80°C时主要获得3,3-二烷氧基丙酸烷基酯。另一方面,在温和的条件下,AuCl 3催化的丙酸酯的区域选择性新四聚反应以中等收率得到了1,2,5,6-四取代-环辛酸酯(1,2,5,6-COT)。