A mineralogically-inspired silver–bismuth hybrid material: an efficient heterogeneous catalyst for the direct synthesis of nitriles from terminal alkynes
作者:Sándor B. Ötvös、Rebeka Mészáros、Gábor Varga、Marianna Kocsis、Zoltán Kónya、Ákos Kukovecz、Péter Pusztai、Pál Sipos、István Pálinkó、Ferenc Fülöp
DOI:10.1039/c7gc02487h
日期:——
The synthesis and characterization of a silver-containing hybrid material is reported as a novel heterogeneous noble metal catalyst. In order to eliminate the need for traditional immobilization techniques, and to create a solid material with structurally-bound silver catalytic centers, the layered structure of a naturally occurring mineral served as the basis of the initial catalyst design. The novel
A photolabile linker for the solid-phase synthesis of 4-substituted NH-1,2,3-triazoles
作者:Katrine Qvortrup、Thomas E. Nielsen
DOI:10.1039/c0cc05274d
日期:——
This communication presents the synthesis of a novel photolabile azidolinker based on the o-nitroveratryl group. The application of this linker for the synthesis and photolytic release of NH-1,2,3-triazoles is described.
Traceless Azido Linker for the Solid-Phase Synthesis of <i>N</i>H-1,2,3-Triazoles via Cu-Catalyzed Azide−Alkyne Cycloaddition Reactions
作者:A. Emil Cohrt、Jakob F. Jensen、Thomas E. Nielsen
DOI:10.1021/ol102209p
日期:2010.12.3
traceless azido linker for the solid-phase synthesis of NH-1,2,3-triazoles is presented. A variety of alkynes were efficiently immobilized on a range of polymericsupports by Cu(I)-mediated azide−alkyne cycloadditions. Supported triazoles showed excellent compatibility with subsequent peptide chemistry. Release of pure material (typically >95%) from the solidsupport was readily achieved by treatment with
β-Tosylethylazide: a useful synthon for preparation of N-protected 1,2,3-triazoles via click chemistry
作者:Amy H. Yap、Steven M. Weinreb
DOI:10.1016/j.tetlet.2006.03.020
日期:2006.5
β-Tosylethylazide (TSE-N3), which can be prepared in one step from p-tolyl vinyl sulfone and sodium azide/H2SO4, undergoes metal-catalyzed 1,3-dipolar cycloadditions with alkynes to produce TSE-protected 1,2,3-triazoles. The protecting group can be removed using potassiumtert-butoxide in THF at −78 to 0 °C.
可以由对甲苯基乙烯基砜和叠氮化钠/ H 2 SO 4一步制得的β-甲苯磺酰基乙叠氮化物(TSE-N 3)与炔烃进行金属催化的1,3-偶极环加成反应,生成TSE保护的1 ,2,3-三唑。可以在-78至0°C的条件下,使用叔丁醇钾的四氢呋喃溶液除去保护基。
10.3998/ark.5550190.p009.846
作者:Banert, Klaus、Hagedorn, Manfred、Hemeltjen, Claudia、Ihle, Andreas、Weigand, Kevin、Priebe, Hanno