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。
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
作者:Zhan-Hui Zhang,、Tong-Shuang Li、Tong-Shou Jin、Ji-Tai Li
DOI:10.1039/a803046d
日期:——
Preparation of diacetals from 2,2-bis(hydroxymethyl)propane-1,3-diol with aldehydes and ketones is catalysed by montmorillonite clays in refluxing benzene or toluene in good to excellent yield.
A Practical and Efficient Procedure for Preparation of Diacetals from 2,2-Bis(hydroxymethyl)propane-1,3-diol with Aldehydes and Ketones Catalysed by Anhydrous Ferrous Sulfate
作者:Tong-Shou Jin、Yan-Ran Ma、Tong-Shuang Li、Jian-Xin Wang
DOI:10.1039/a900025i
日期:——
Synthesis of diacetals in excellent yields from aldehydes and ketones with 2,2-bis(hydroxymethyl)propane-1,3-diol is carried out in refluxing benzene or toluene with anhydrous ferrous sulfate as catalyst.
Synthesis of diacetals from 2,2-bis(hydroxymethyl)-1,3-propanediol with aldehydes and ketones under catalysis of expansive graphite in refluxing benzene or toluene in good to excellent yield has been described.