ZrO<sub>2</sub>-supported Cu(<scp>ii</scp>)–β-cyclodextrin complex: construction of 2,4,5-trisubstituted-1,2,3-triazoles via azide–chalcone oxidative cycloaddition and post-triazole alkylation
作者:Yarabally R. Girish、Kothanahally S. Sharath Kumar、Umashankar Muddegowda、Neartur Krishnappagowda Lokanath、Kanchugarakoppal S. Rangappa、Sheena Shashikanth
DOI:10.1039/c4ra09970b
日期:——
The ZrO2–Cu2–β-CD complex is an excellent catalyst for the synthesis of N-2-alkylated-1,2,3-triazoles.
ZrO2–Cu2–β-CD复合物是合成N-2-烷基化-1,2,3-三唑的优秀催化剂。
Aluminum chloride–catalyzed C-alkylation of pyrrole and indole with chalcone and bis-chalcone derivatives
作者:Meliha Burcu Gürdere、Oguz Özbek、Mustafa Ceylan
DOI:10.1080/00397911.2015.1136644
日期:2016.2.16
AlCl3-catalyzed alkylation of pyrrole (2) with chalcone (1a–i) at a ratio of 8:1 in the presence of 10 mol% AlCl3 gave the solely 2-alkyl pyrroles (3a–i) at room temperature for 12 in good yields. The same reaction was performed with pyrrole (2) and chalcone at a ratio of 1:3 in CH3CN at rt for 3 h to achieve 2,5-dialkyl pyrroles (4a–f). In addition, the reaction of the pyrrole (2) and indole (7) on 1,4-phenylene
Triethylamin-mediated addition of 2-aminoethanethiol hydrochloride to chalcones: Synthesis of 3-(2-aminoethylthio)-1-(aryl)-3-(thiophen-2-yl) propan-1-ones and 5,7-diaryl-2,3,6, 7-tetrahydro-1,4-thiazepines
作者:Meliha Burcu Gürdere、Ali Cemal Emeç、Osman Nuri Aslan、Yakup Budak、Mustafa Ceylan
DOI:10.1080/00397911.2016.1152585
日期:2016.3.18
addition, bearing a 2-thienyl group at the 3-position, gave the only addition adduct at room temperature in 3 h, whereas the chalcones bearing the 2-furyl group at the 1-position gave an addition-cyclization product (1, 4-thiazepine) in the same conditions. The effect of the groups to the reaction was investigated by changing the 1- and 3-position groups. The chalcones bearing the 2-thienyl group at the 1-position
The Effects of Pendant vs. Fused Thiophene Attachment upon the Luminescence Lifetimes and Electrochemistry of Tris(2,2′‐bipyridine)ruthenium(II) Complexes
作者:Lasse J. Nurkkala、Robert O. Steen、Henrik K. J. Friberg、Johanna A. Häggström、Paul V. Bernhardt、Mark J. Riley、Simon J. Dunne
DOI:10.1002/ejic.200800456
日期:2008.9
The electrochemical and photophysical properties for a range of ruthenium(II) tris-2,2’-bipyridinecomplexes in which a thiophene substituent is attached to one of the bipyridine ligands via either ...
一系列钌 (II) 三-2,2'-联吡啶配合物的电化学和光物理特性,其中噻吩取代基通过以下任一方式连接到一个联吡啶配体上...
Discovery of Novel Approach for Regioselective Synthesis of Thioxotriaza-Spiro Derivatives via Oxalic Acid
作者:Vindya K. Gopinatha、Hassan A. Swarup、Sathees C. Raghavan、Kempegowda Mantelingu、Kanchugarakoppal S. Rangappa
DOI:10.1055/s-0039-1690204
日期:2019.10
A vital approach for the synthesis of a range of novel thioxotriaza-spiro derivatives is described. These new heterocyclic systems are obtained via oxalic acid catalyzed reaction of α,β-unsaturated ketones in the presence of 5,6-diamino-2-mercaptopyrimidine-4-ols; thus, spiro rings are constructed in one step. Notably, this transformation involves condensation of an amino group followed by enamine