Porous Metal–Organic Framework Catalyzing the Three-Component Coupling of Sulfonyl Azide, Alkyne, and Amine
作者:Tao Yang、Hao Cui、Changhe Zhang、Li Zhang、Cheng-Yong Su
DOI:10.1021/ic4012229
日期:2013.8.5
was shown to work as an efficiently heterogeneous catalyst for the three-componentcoupling of sulfonyl azides, alkynes, and amines, leading to the formation of N-sulfonyl amidines in good yields. MOF–Cu2I2(BTTP4) can be recycled by simple filtration and reused at least four times without any loss in yield. Studies of the ligand effects on the three-componentcoupling reactions showed that BTTP4 could
坚固耐用的多孔金属-有机骨架MOF-Cu 2 I 2(BTTP4)(BTTP4 =苯-1,3,5-三基三异烟酸酯)被证明是磺化叠氮化物,炔烃三组分偶联的有效多相催化剂。和胺,导致以高收率形成N-磺酰基am。MOF–Cu 2 I 2(BTTP4)可以通过简单过滤进行回收,并至少重复使用四次而不会损失任何产量。对配体对三组分偶联反应的影响的研究表明,当使用芳香族炔烃时,BTTP4可以提高速率以及化学选择性。通过单晶和粉末X射线衍射,气体和溶剂吸附,原位1 H NMR和FT-IR光谱,X射线光电子能谱(XPS)以及Cu的ICP分析,对催化过程进行了深入研究。浸出。
Aerobic synthesis of <i>N</i>-sulfonylamidines mediated by N-heterocyclic carbene copper(I) catalysts
作者:Faïma Lazreg、Marie Vasseur、Alexandra M Z Slawin、Catherine S J Cazin
DOI:10.3762/bjoc.16.43
日期:——
A new catalytic strategy for the one-pot synthesis of N-sulfonylamidines is described. The cationic copper(I) complexes were found to be highly active and efficient under mild conditions in air and in the absence of solvent. A copper acetylide is proposed as key intermediate in this transformation.