Montmorillonite Clays Catalysis. Part 12.1 An Efficient and Practical Procedure for Synthesis of Diacetals from 2,2-Bis(hydroxymethyl)propane-1,3-diol with Carbonyl Compounds
2,4,4,6-Tetrabromo-2,5-cyclohexadienone (TABCO) as a Versatile, Efficient, and Chemoselective Catalyst for the Acetalization and Transacetalization of Carbonyl Compounds, the Preparation of Acetonides from Epoxides and Acylals (1,1-Diacetates) from Aldehydes
The efficient and chemoselective preparation of acetals and ketals from carbonyl compounds, transacetalization reactions, the conversion of epoxides to acetonides, and the preparation of acylals from aldehydes in the presence of catalytic amounts of 2,4,4,6-tetrabromo-2,5-cyclohexadienone (TABCO) are described.
Synthesis of Diacetals from Aldehydes and Ketones with Pentaerythritol Catalyzed by Silica Sulfate Under Microwave Irradiation
作者:Tong‐Shou Jin、Huan‐Xin Wang、Kai‐Fang Wang、Tong‐Shuang Li
DOI:10.1081/scc-200026658
日期:2004.1.1
Abstract The synthesis of diacetals from pentaerythritol with aldehydes and ketones is carried out undermicrowaveirradiation in 80–98% yields with silica sulfate as catalyst.
摘要 季戊四醇与醛和酮合成二缩醛是在微波辐射下以硫酸硅为催化剂以 80-98% 的产率进行的。
A Green Recyclable Poly(4-Vinylpyridine)-Supported Copper Iodide Nanoparticle Catalyst for the Chemoselective Synthesis of Pentaerythritol Diacetals from Aromatic Aldehydes
Poly(4-vinylpyridine)-supported copper(I) iodide nanoparticles have been used as an efficient, green recyclable catalyst for the chemoselective synthesis of pentaerythritol diacetals from aromatic aldehydes and pentaerythritol under solvent-free conditions. This catalyst was reused six times without any loss of its activity.
Acetalization of Carbonyl Compounds as Pentaerythritol Diacetals and Diketals in the Presence of Cellulose Sulfuric Acid as an Efficient, Biodegradable and Reusable Catalyst
作者:Hamid Reza Shaterian、Fatemeh Rigi
DOI:10.1002/cjoc.201280002
日期:2012.3
This paper reports a practical and green method for the acetalization of carbonylcompounds as pentaerythritoldiacetals and diketals derivatives using cellulosesulfuricacid as a biodegradable and reusable solid acidcatalyst under thermal solvent‐free conditions.
A new approach to the synthesis of diacetals (diketals) pentaerythritol catalyzed by SO3H-functionalized ionic liquids
作者:Yuan Yuan Wang、Yan Nan Xu、Zhi Zhong Wang、Li Yi Dai
DOI:10.1016/j.cclet.2009.12.014
日期:2010.5
and environmentally friendly approach to the synthesis of diacetals (diketals) pentaerythritol using SO3H-functionalizedionicliquids (ILs) as catalysts was reported. The ILs show high catalytic activity and reusability with good to excellent yields of the desired products. Hammett method has been used to determine the acidity order of these ionicliquids and the results are consistent with the catalytic