Direct synthesis of tetrahydropyran-4-ones <i>via</i> O<sub>3</sub>ReOH-catalyzed Prins cyclization of 3-chlorohomoallylic alcohols
作者:Kwanruthai Tadpetch、Pongsit Vijitphan、Sasiwan Kaewsen、Aticha Thiraporn、Vatcharin Rukachaisirikul
DOI:10.1039/d2ob01941h
日期:——
A new variation of Prins cyclization to directly and stereoselectively synthesize cis-2,6-disubstituted tetrahydropyran-4-ones from 3-chlorohomoallylic alcohols and aldehydes catalyzed by perrhenic acid is reported. The reaction is generally compatible with a range of aliphatic and aromatic aldehydes and 24 examples of tetrahydropyran-4-one products have been prepared in moderate to good yields. This
报道了 Prins 环化的一种新变化,即在高铼酸催化下,从 3-氯代高烯丙醇和醛中直接立体选择性地合成顺式-2,6-二取代四氢吡喃-4-酮。该反应通常与一系列脂肪族和芳香族醛相容,并且已经以中等到良好的产率制备了 24 种四氢吡喃-4-酮产物。该方法强调使用简单的起始材料和市售的高铼酸水溶液作为 Prins 环化反应的催化剂,直接合成 2,6-二取代四氢吡喃-4-酮。