example of the palladium-catalyzed tandem addition/cyclization of 2-(2-acylphenoxy)acetonitriles with arylboronic acids has been developed, providing a new strategy for the synthesis of 2-aroyl benzofurans with excellent chemoselectivity and wide functional group compatibility. Preliminary mechanistic experiments indicate that this tandem process involves sequential nucleophilic addition generating 2
A series of di substitutedindole and tri substituted pyrrole derivatives were synthesized efficiently by using I2/K2CO3 in DMSO. The novel synthesis method offers the advantage of mild reaction conditions, operational simplicity, higher yields. The method is functional group tolerant and provides quick access to medicinally significant compounds in moderate to high yields.
通过在DMSO中使用I 2 / K 2 CO 3有效合成了一系列二取代的吲哚和三取代的吡咯衍生物。新颖的合成方法具有反应条件温和,操作简单,产率高的优点。该方法具有官能团耐受性,可以以中等到高产率快速获得具有医学意义的化合物。
Microwave Energized Synthesis of 2-Aroylindole Derivatives: Piperidine/DMF as an Effective Medium
been developed for the synthesis of 2‐aroylindoles (3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j) in good yields by the reaction of 2‐aminoketones (1a, 1b, 1c) with phenacyl bromides (2a, 2b, 2c, 2d). The reaction success varied with different bases and solvents in both conventional and microwave methods. But finally, it was established that piperidine in DMF was an effectivemedium to carry out the reaction
A Novel Pd-Catalysed Annulation Reaction for the Syntheses of Pyrroloindoles and Pyrroloquinolines
作者:Dattatraya H. Dethe、Raghavender Boda
DOI:10.1002/chem.201503652
日期:2016.1.4
Pd‐catalysed annulationreactions between indole derivatives and internal alkyne esters leading to various pyrrolo[1,2‐a]indoles and pyrroloquinolines have been developed. The strategy involves an intermolecular addition of the indole nitrogen on to the internal alkyne ester followed by an intramolecular insertion of a vinyl–palladium complex into the carbonyl group. This method offers a facile and
吲哚衍生物与内部炔烃酯之间的钯催化环化反应已开发出各种吡咯并[1,2- a ]吲哚和吡咯并喹啉。该策略涉及将吲哚氮分子间添加到内部炔烃酯上,然后将乙烯基钯复合物分子内插入羰基中。该方法为吡咯并[1,2- a ]吲哚和吡咯并喹啉提供了一种简便实用的方法。
Benzene-fused BODIPYs: synthesis and the impact of fusion mode
作者:Yong Ni、Wangdong Zeng、Kuo-Wei Huang、Jishan Wu
DOI:10.1039/c2cc38380b
日期:——
BODIPY derivatives with one or two benzene units fused at different positions are prepared using novel synthetic methods. The resulting dye 1 shows deep red fluorescence with a large Stokes shift. Dyes 2 and 3 are reported for the first time and 3 exhibits nearinfraredabsorption. The impact of benzannulation at different positions of BODIPY is discussed, and the geometry and electronic structure