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。
Copper exchanged Scolecite was successfully synthesized and used as an efficient, mild and recyclable catalyst for promoting multi-componentsynthesis of amidines from 4-toluenesulfonyl azide, phenyl acetylene and variety of substituted amines in THF at ambienttemperature in good yields within short reaction time.
Highly Efficient Synthesis of N-Sulfonylamidines via Silver-Catalyzed or Metal-Free Thermally Promoted Denitrogenative Amination of N-Sulfonyl-1,2,3-triazoles
3-triazoles and amines is reported. This transformation undergoes silver-catalyzed or metal-free thermally promoted denitrogenation of N-sulfonyl-1,2,3-triazoles to afford N-sulfonylketenimine intermediates and subsequent nucleophilic addition with amines. The amine plays dual roles as base and nucleophile. A highly efficient synthesis of N-sulfonylamidines from N-sulfonyl-1,2,3-triazoles and amines is reported
Highly Efficient One-Pot Synthesis of <i>N</i>-Sulfonylamidines by Cu-Catalyzed Three-Component Coupling of Sulfonyl Azide, Alkyne, and Amine
作者:Imhyuck Bae、Hoon Han、Sukbok Chang
DOI:10.1021/ja0432968
日期:2005.2.1
and catalytic multicomponent reaction for the synthesis of N-sulfonylamidines has been developed. This reaction has an extremely wide scope with regard to all three coupling components of alkyne, sulfonylazide, and amine. Two plausible mechanistic pathways involving ketenimine or triazole intermediate are tentatively presented for the copper-catalyzed three-component coupling reactions.