Amberlyst‐15 as a Green and Efficient Reusable Catalyst for Friedel‐Crafts Alkylation of Activated Arenes with N‐Sulfonyl Aldimines and Synthesis of Bis‐triarylmethanes,ChemistrySelect

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Amberlyst‐15 as a Green and Efficient Reusable Catalyst for Friedel‐Crafts Alkylation of Activated Arenes with N‐Sulfonyl Aldimines and Synthesis of Bis‐triarylmethanes
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-09-13 , DOI: 10.1002/slct.201801664
Ponnaboina Thirupathi ₁ , Noole Venkatagiri ₂ , Chepyala Krishna Reddy ₂

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Amberlyst‐15 has been found to be an efficient and an inexpensive acidic heterogeneous catalyst for Friedel–Crafts alkylation of an activated arenes and N‐sulfonyl aldimines at room temperature. A Friedel‐Crafts alkylation products further undergoes alkylation with another mole of activated arenes to afford bis‐triarylmethanes in single transformation. Non‐toxicity and high stability of catalyst, broad applicability to various substrates with good to high yields and a simple operational procedure are the major advantages of the present method. The catalyst can be easily recycled by simple filtration and reused consecutively four times times without significant loss of activity.

中文翻译：

Amberlyst-15是一种绿色高效的可重复使用的催化剂，用于活化的芳烃与N-磺酰基醛亚胺的Friedel-Crafts烷基化反应和双三芳基甲烷的合成

已发现Amberlyst-15是一种高效且廉价的酸性非均相催化剂，可在室温下对活化的芳烃和N-磺酰基醛亚胺进行Friedel-Crafts烷基化。Friedel-Crafts烷基化产物进一步与另一摩尔活化的芳烃进行烷基化，以单次转化得到双三芳基甲烷。该方法的主要优点是无毒，催化剂的高稳定性，对各种底物的广泛适用性以及高至高收率以及简单的操作程序。该催化剂可以通过简单的过滤而容易地再循环，并且连续四次重复使用而没有明显的活性损失。

更新日期：2018-09-13

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