One-pot synthesis at room temperature of epoxides and linalool derivative pyrans in monolacunary Na<sub>7</sub>PW<sub>11</sub>O<sub>39</sub>-catalyzed oxidation reactions by hydrogen peroxide
作者:Castelo B. Vilanculo、Márcio J. Da Silva、Milena Galdino Teixeira、Jesus Avendano Villarreal
DOI:10.1039/d0ra00047g
日期:——
new one-pot synthesis route of valuable linalool oxidation derivatives (i.e., 2-(5-methyl-5-vinyltetrahydrofuran-2-yl propan-2-ol) (1a)), 2,2,6-trimethyl-6-vinyltetrahydro-2H-pyran-3-ol (1b) and diepoxide (1c), using a green oxidant (i.e., hydrogen peroxide) under mild conditions (i.e., room temperature). Lacunar Keggin heteropolyacid salts were the catalysts investigated in this reaction. Among them
在这项工作中,我们描述了一种有价值的芳樟醇氧化衍生物(即2-(5-methyl-5-vinyltetrahydrofuran-2-yl propan-2-ol) ( 1a ))、2,2、 6-trimethyl-6-vinyltetrahydro-2 H -pyran- 3-ol ( 1b ) 和二环氧化物 ( 1c ),在温和条件下(即室温)使用绿色氧化剂(即过氧化氢)。Lacunar Keggin 杂多酸盐是该反应中研究的催化剂。其中,Na 7 PW 11 O 39对氧化产物最具活性和选择性。通过FT-IR、TG/DSC、BET、XRD分析和电位滴定对所有催化剂进行了表征。评估主要反应参数。特别注意将催化剂的组成和性质与其活性相关联。