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A review on the advancement of ether synthesis from organic solvent to water

机译：从有机溶剂到水的醚合成的进步综述

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摘要

Ethers have been synthesized by the different protocols such as Williamson ether synthesis, the Mitsunobu reaction, bimolecular dehydration, the Ullmann method, a transition metal-free coupling reaction between aliphatic alcohols and unsymmetric diaryliodonium salts, room temperature ionic liquid promoted synthesis, Cu(II) catalyzed synthesis, microwave assisted synthesis, and synthesis under solvent free micellar conditions. A good number of homogeneous Bronsted acids and Lewis acid based transition metals have also been reported as catalysts in the etherification of alcohols. The above mentioned pathway has exhibited some drawbacks including their deactivation through decomposition caused by the water formed during the course of the reaction. In many cases these methods also reveal the accumulation of a significant amount of acid at the end of the reaction due to the hydrolysis of Lewis acid catalysts such as metal oxides, which upon neutralization give a considerable amount of salts. A literature survey shows some reports on the use of phase transfer and polymer and clay supported catalysts for the synthesis of symmetrical and unsymmetrical ethers. To a synthetic chemist, an aqueous micellar solution is a good choice as a reaction medium for synthesizing several organic compounds. Micellar conditions are a new direction of study for ether synthesis as they are simple, efficient, economical and environmentally friendly.
机译：通过不同的方案（如WilliaMSON醚合成）合成，Mitsunobu反应，双分子脱水，Ullmann方法，脂族醇与非对称二芳基盐之间的过渡金属偶联反应，室温离子液体促进合成，Cu（II ）催化合成，微波辅助合成，并在溶剂自由胶束条件下合成。在醇醚化中，还将良多均匀的支架酸和Lewis酸基转变金属呈作为催化剂报道。上述途径表现出一些缺点，包括通过在反应过程中形成的水​​引起的分解失活的缺点。在许多情况下，这些方法还揭示了由于路易斯酸催化剂如金属氧化物的水解而在反应结束时积聚了大量的酸，其在中和时产生相当大量的盐。文献调查显示了关于使用相转移和聚合物和粘土支持的催化剂的一些报道，用于合成对称和非对称醚。对于合成化学家，含水介质溶液是作为合成几种有机化合物的反应介质的良好选择。胶束状况是醚合成的新的研究方向，因为它们简单，高效，经济，环保。

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  • 来源
    《RSC Advances》 |2016年第73期|共10页
  • 作者

    Mandal Sangita; Mandal Swagata; Ghosh Sumanta K.; Sar Pintu; Ghosh Aniruddha; Saha Rumpa; Saha Bidyut;

  • 作者单位

    Univ Burdwan Dept Chem Homogeneous Catalysis Lab Burdwan 713104 W Bengal India;

    Univ Burdwan Dept Chem Homogeneous Catalysis Lab Burdwan 713104 W Bengal India;

    Univ Burdwan Dept Chem Homogeneous Catalysis Lab Burdwan 713104 W Bengal India;

    Univ Burdwan Dept Chem Homogeneous Catalysis Lab Burdwan 713104 W Bengal India;

    Univ Burdwan Dept Chem Homogeneous Catalysis Lab Burdwan 713104 W Bengal India;

    TDB Coll Raniganj Dept Chem Raniganj 713383 W Bengal India;

    Univ Burdwan Dept Chem Homogeneous Catalysis Lab Burdwan 713104 W Bengal India;

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  • 正文语种 eng
  • 中图分类 化学;
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