New Applications of Solid Silica Chloride (SiO 2 -Cl) in Organic Synthesis. Efficient Preparation of Diacetals of 2,2-Bis(Hydroxymethyl)-1,3-propanediol from Different Substrates and Their Transthioacetalization Reactions. Efficient Regeneration of Carbonyl Compounds from Acetals and Acylals
作者:Habib Firouzabadi、Nasser Iranpoor、Hassan Hazarkhani
DOI:10.1080/10426500214879
日期:2002.12.1
application of solid silica chloride, an easily available and efficient catalyst for the preparation of diacetal of 2,2-bis-(hydroxymethyl)-1,3-propanediol from aldehydes, acetals, acylals, and oximes, is described. Transthioacetalization of diacetals of 2,2-bis-(hydroxymethyl)-1,3-propanediol into their corresponding 1,3-dithianes and 1,3-dithiolanes in the presence of silica chloride is presented. Efficient
描述了固体氯化硅的新应用,它是一种易于获得且高效的催化剂,用于从醛、缩醛、酰基和肟制备 2,2-双-(羟甲基)-1,3-丙二醇的二缩醛。介绍了 2,2-双-(羟甲基)-1,3-丙二醇的二缩醛在氯化硅存在下转化为相应的 1,3-二噻烷和 1,3-二硫戊烷的转硫缩醛化反应。还描述了在该催化剂存在下羰基化合物从其相应的缩醛、缩酮、二缩醛和酰基的有效再生。