Palladium‐Catalysed Cyclisation of
<i>N</i>
‐Alkynyl Aminomalonates
作者:Wilfried Hess、Jonathan W. Burton
DOI:10.1002/chem.201001951
日期:2010.11.2
Go around in (hetero)cycles! The palladium‐catalysed tandem cyclisation/coupling reaction of alkynyl‐ and alkenyl‐substituted aminomalonates leads to highly functionalised pyrrolidines and piperidines in good yield (see scheme). The reaction allows efficient access to a broad range of synthetically valuable building blocks.
Highly Efficient and Regioselective Platinum(II)-Catalyzed Tandem Synthesis of Multiply Substituted Indolines and Tetrahydroquinolines
作者:Xin-Yuan Liu、Chi-Ming Che
DOI:10.1002/anie.200805383
日期:2009.3.16
special advantage: The platinum(II)‐catalyzed tandemcyclization of aminoalkynes with 1,3‐diketones offers a new and highly efficient method for the synthesis of indolines and tetrahydroquinolines (see scheme; M.S.=molecular sieves). This transformation affords good to excellent product yields with high regio‐ and chemoselectivity under mild reactionconditions.
一个特殊的优势:带有1,3-二酮的铂(Ⅱ)催化的氨基炔的串联环化为合成二氢吲哚和四氢喹啉提供了一种高效的新方法(见方案; MS =分子筛)。在温和的反应条件下,这种转化可提供良好的产品收率,具有很高的区域选择性和化学选择性。
Catalytic One-Pot Synthesis of Cyclic Amidines by Virtue of Tandem Reactions Involving Intramolecular Hydroamination under Mild Conditions
作者:Sukbok Chang、Minjae Lee、Doo Young Jung、Eun Jeong Yoo、Seung Hwan Cho、Sun Kyu Han
DOI:10.1021/ja064788i
日期:2006.9.1
A newsynthetic methodology for the generation of cyclic amidines has been developed by the reaction of 1,n-aminoalkynes with electron-deficient azides using a ruthenium catalyst at ambient temperature. The reaction proceeds most likely via a tandem sequence of intramolecular hydroamination of aminoalkynes, cycloaddition of azides with the resulting enamines, and rearrangement of triazoline intermediates
Synthetic evolutions in the nucleophilic addition to alkynes
作者:Bo Xu、Weibo Wang、Le-Ping Liu、Junbin Han、Zhuang Jin、Gerald B. Hammond
DOI:10.1016/j.jorganchem.2010.09.025
日期:2011.1
fluorine-engendered cationic gold catalysis. In addition, we have conducted the synthesis of O-heterocycles through a gold-catalyzed tandem addition/cycloisomerization sequence, the synthesis of N-heterocycles through a copper-catalyzed cyclization-triggered addition of alkynes, and a green synthesis of thioethers ‘on water’ without catalyst or initiator. These nucleophilic synthetic evolutions, catapulted by a simple
Design of a Fluorogenic Probe Based on Intramolecular Condensation for Specific Detection of HDAC3
作者:Huimin He、Aiguo Song
DOI:10.1002/asia.202200575
日期:2022.9
trans-enamide moiety was incorporated to construct a fluorescentprobe for specificdetection of histone deacetylases (HDACs). Rapid intramolecular condensation between newly formed aldehyde and hydrazine moiety would occur to afford highly fluorescent product upon deacetylation by HDACs. Systematic studies demonstrated that the probeexhibited an extraordinary selectivity for HDAC3 over other HDAC