Solvent-free solid acid-catalyzed nucleophilic substitution of propargylic alcohols: a green approach for the synthesis of 1,4-diynes
作者:Tao Wang、Rui-da Ma、Liu Liu、Zhuang-ping Zhan
DOI:10.1039/c0gc00117a
日期:——
Acid-treated K10 montmorillonite (H-K10 mont) exhibited an outstanding catalytic activity in the nucleophilicsubstitution of propargylic alcohols with alkynylsilanes. The reactions were carried out under solvent-free conditions, and the solid catalyst was reusable with retention of its high activity. This method provides a green and rapid route to 1,4-diynes.
Under different conditions, the reaction of propargyl alcohols and terminal alkynes leads to the selective formation of 1,4-diynes and polysubstituted furans/pyrroles. Water is the only byproduct in the selective synthesis of 1,4-diynes and pyrroles, and the strategy for the furan synthesis is of 100% atom economy.
Iron(III) Chloride-catalyzed Nucleophilic Substitution of Propargylic Alcohols: A General and Efficient Approach for the Synthesis of 1,4-Diynes
A wide variety of 1,4-diynes have been constructed via a novel FeCl3-catalyzed coupling reaction of propargylic alcohols with alkynylsilanes. This synthetic approach provides a general, efficient, ...