排序方式: 共有59条查询结果,搜索用时 257 毫秒
21.
Firouz Matloubi Moghaddam Seyed Ebrahim Ayati Hamid Reza Firouzi Fereshte Ghorbani 《应用有机金属化学》2016,30(6):488-493
A new heterogeneous copper catalyst was synthesized by immobilization of copper ions onto magnetic nanoparticles with a new ligand based on triazole. The catalyst was characterized using scanning and transmission electron microscopies, atomic absorption and Fourier transform infrared spectroscopies, and thermogravimetric, elemental and energy‐dispersive X‐ray analyses. The results confirmed that a good level of organic groups was immobilized on the magnetic nanoparticles. Huisgen cycloaddition reaction was chosen as a model reaction for the investigation of catalyst activity under green conditions. Phenylacetylene and benzyl bromide derivatives were used for the synthesis of triazoles. The reaction proceeded with good to excellent yields for various alkynes and alkyl halides. To investigate catalyst activity for inactive alkynes, aliphatic alkynes were used in the model reaction. The corresponding triazoles were obtained in good to excellent yields and a high regioselectivity for products was obtained. The catalyst was easily separated using an external magnetic field and subsequently reused in ten reaction cycles without any loss of catalytic activity. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
22.
Firouz Matloubi Moghaddam Hossein Ismaili Ghasem Rezanejade Bardajee 《Heteroatom Chemistry》2006,17(2):136-141
A simple, fast and efficient benign procedure has been developed for one‐pot synthesis of 2‐substituted benzothiazoles in the presence of zirconium(IV) oxide chloride octahydrate (ZrOCl2·8H2O) and anhydrous copper(II) sulfate. The reaction of 2‐aminothiophenol with aldehydes and anhydrides was carried out efficiently in solvent‐free conditions with or without microwave irradiation, and adducts were produced in good to excellent yields. © 2006 Wiley Periodicals, Inc. Heteroatom Chem 17:136–141, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20191 相似文献
23.
24.
Firouz Matloubi Moghaddam Behzad Koushki Foroushani Maryam Sobhani Nazila masoud Mohammad Reza Khodabakhshi Ng Seik Weng 《Tetrahedron》2013
Indoline-2-thiones (5) were applied as 1,3-dinucleophiles in a tandem reaction with Baylis–Hillman adduct acetates (4) to give novel tetrahydrothiopyrano[2,3-b]indole skeletons (6). The effect of different solvents, bases, and catalysts on the yields and stereochemical outcome was studied in detail. The results indicated that acetonitrile as solvent and K2CO3 as base, under reflux conditions, were the optimum conditions. Products 6a–6l were obtained in high diastereoselectivity and yield (up to 94%). 相似文献
25.
Firouz Matloubi Moghaddam Mostafa Kiamehr Mohammad Reza Khodabakhshi Marjan Jebeli Javan Shaghayegh Fathi Alexander Villinger Viktor O. Iaroshenko Peter Langer 《Helvetica chimica acta》2013,96(11):2103-2114
An efficient one‐pot, three‐component synthesis of novel dispiro[oxindole‐3,3′‐pyrrolidines] by 1,3‐dipolar cycloaddition of azomethine ylides, in situ generated by reaction of 1,2‐diones with sarcosine and subsequent decarboxylation, with a series of (E)‐3‐benzylidene‐2,3‐dihydro‐1H‐indol‐2‐ones is reported. Molecular complexity is generated in only one synthetic step. All reactions proceed with excellent regioselectivity and in good‐to‐excellent yields. The workup is easy, the reaction times are short, and no catalyst is required. 相似文献
26.
Firouz Matloubi Moghaddam Seyedeh Maryam DokhtTaimoory Hossein Ismaili Ghasem Rezanejade Bardajee 《合成通讯》2013,43(23):3599-3607
KF/Al2O3 efficiently catalyzes N‐alkylation of heterocyclic, primary, and secondary amines and S‐alkylation of thiols with a variety of alkyl halides. The N‐alkylation and S‐alkylation adducts were produced in good to excellent yields and in short times. 相似文献
27.
Abstract: Aryl or alkyl propargyl ethers have been isomerized efficiently with good to excellent yield into corresponding allenyl ethers in the presence of potassium tert-butoxide under the microwave irradiation. 相似文献
28.
Immobilized palladium nanoparticles on MNPs@A‐N‐AEB as an efficient catalyst for C‐O bond formation in water as a green Solvent
下载免费PDF全文
![点击此处可从《应用有机金属化学》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Palladium nanoparticles immobilized on the magnetic nanoparticles@2‐amino‐N‐(2‐aminoethyl) benzamide (MNPs@A‐N‐AEB.Pd0) have been presented as an efficient, and reusable magnetically heterogeneous catalyst for the C‐O coupling reaction, namely Ullmann condensation reactions in an aqueous medium. This heterogeneous catalyst shows superior reactivity for the C‐O arylation of different aryl halide (chloride, bromide, and iodide) with phenol derivatives to afford the desired products in good to excellent yields within short reaction time. Moreover, the catalyst can be easily recovered and reused for seven runs without loss of catalytic activity. The catalyst was characterized by several techniques, such as FT‐IR, SEM, TEM, EDS, XRD, TGA and ICP‐OES. 相似文献
29.
An efficient 12-step route for the synthesis of the diterpenoid quinone (±)-danshexinkun A in 23% overall yield from the corresponding highly substituted stilbene using a photocyclization strategy is described. 相似文献
30.
Firouz Matloubi Moghaddam Bahram Ghanbari Masoumeh Behzadi Mohammad Hadi Baghersad 《Journal of heterocyclic chemistry》2017,54(2):911-915
Hetero‐Diels–Alder reactions of [60]fullerene with α,β‐unsaturated thio‐oxindoles ( 3a , 3b , 3c ), prepared from thio‐oxindole 1 and heteroaromatic aldehydes ( 2a , 2b , 2c ), to generate tetrahydrothiopyrano[2,3‐b ]indole [60]fullerene cycloadducts ( 5a , 5b , 5c ) under thermal or microwave irradiation were described. The yields were improved, and the reaction time was decreased by conducting the reaction under microwave irradiation. 相似文献