An iron(III)-catalyzed three-component coupling reaction of alkynes, CH(2)Cl(2) and amines was developed for facile synthesis of propargylamines. Preliminary mechanism investigation using in situ FT-IR reveals that the crucial Fe-acetylide intermediate could be formed through C-H bond activation of alkynes thanks to cooperative effect of FeCl(3) and 1,1,3,3-tetramethylguanidine.
Recyclable Cu/C<sub>3</sub>N<sub>4</sub> composite catalyzed AHA/A<sup>3</sup> coupling reactions for the synthesis of propargylamines
作者:Hang Xu、Jun Wang、Peng Wang、Xiyu Niu、Yidan Luo、Li Zhu、Xiaoquan Yao
DOI:10.1039/c8ra06613b
日期:——
be efficient for the synthesis of propargylamines using a three-componentcouplingreaction of alkynes, CH2Cl2 and amines (AHA) without additional base. Moreover, the catalyst also showed highly catalytic activity in the synthesis of C1-alkynylated tetrahydroisoquinolines (THIQs) via an A3 reaction of alkynes, aldehydes and THIQ. The Cu/C3N4-catalyzed multicomponent reactions exhibited good functional
发现非均相 Cu/C 3 N 4催化剂可有效合成炔丙基胺,使用炔烃、CH 2 Cl 2和胺 (AHA) 的三组分偶联反应,无需额外碱。此外,该催化剂在通过炔烃、醛和 THIQ的 A 3反应合成 C1-炔基化四氢异喹啉 (THIQ) 中也表现出高度催化活性。Cu/C 3 N 4催化的多组分反应在大多数例子中表现出良好的官能团耐受性。此外,容易制备的 Cu/C 3 N 4催化剂可以方便地回收和重复使用5次以上而不会失去催化活性。