作者:Augusto L.P. de Meireles、Kelly A. da Silva Rocha、Elena F. Kozhevnikova、Ivan V. Kozhevnikov、Elena V. Gusevskaya
DOI:10.1016/j.mcat.2020.111382
日期:2021.2
H3PW12O40 heteropoly acid supported on SiO2 and its bulk acidic cesium salt Cs2.5H0.5PW12O40 are demonstrated to be highly active and recyclable solid catalysts for Prins cyclization allowing for the clean, high-yielding synthesis of Florol® from isoprenol and isovaleraldehyde. Florol®, a valuable floral odorant employed in a vast variety of commercial products, was obtained in ca. 80 % yield under
SiO 2上负载的H 3 PW 12 O 40杂多酸及其本体酸性铯盐Cs 2.5 H 0.5 PW 12 O 40是高活性且可回收的固体催化剂,可用于Prins环化反应,从而实现清洁,高产率的Florol合成®由异戊烯醇和异戊醛制成。Florol®是一种可在多种商业产品中使用的有价值的花香剂,大约在2000年获得。在接近环境条件下的收率为80%。用作绿色反应介质的碳酸二甲酯或碳酸二乙酯,催化剂用量低和适中的条件是有助于该方法可持续性的重要特征。