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Chinese Chemical Letters 2015年第6期26卷 735-738页

作者： Sima Kalhor javad safaei-Ghomi Department of Chemistry Qom BranchIslamic Azad University

A simple and green method has been developed for the synthesis of 2-aminocyclohex-l-ene-l- carboxylic esters through a one-pot three-component condensation reaction of primary amines, ethyl acetoacetate and chalcones using FeCI3/SiO2 nanoparticles in ethanol. This method has several advantages such as high to excellent product yields in short time, using an inexpensive and reusable catalyst and available starting material.

关键词： FeCl3/SiO2 nanoparticlesMulti-component reactionsOne-pot2-Aminocyclohex-l-ene-l-carboxylicestersChalcone

Zinc oxide nanoparticles:A highly efficient and readily recyclable catalyst for the synthesis of xanthenes

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Chinese Chemical Letters 2012年第11期23卷 1225-1229页

作者： javad safaei-Ghomi Mohammad Ali Ghasemzadeh Department of Organic Chemistry Faculty of ChemistryUniversity of Kashan

A novel and efficient route for the synthesis of 1,8-dioxooctahydroxanthenes and 14-aryl-14H-dibenzo[a,j]xanthenes is described through one-pot multi-component reaction of dimedone and 2-naphthol with various aryl aldehydes using ZnO nanoparticles under solvent-free conditions. This method provides a novel and improved pathway for the synthesis of xanthenes in the terms of excellent yields, short reaction times, reusability and low catalyst loading.

关键词： ZnO nanoparticles Xanthene Solvent-free Multi-component reaction Heterogeneous catalysts

Pseudo five-component process for the synthesis of functionalized tricarboxamides using CuI nanoparticles as reusable catalyst

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Chinese Chemical Letters 2013年第3期24卷 195-198页

作者： Abolfazl Ziarati javad safaei-Ghomi Sahar Rohani Department of Organic Chemistry Faculty of ChemistryUniversity of KashanKashan 51167Islamic Republic of Iran

An efficient and multicomponent method has been developed for the synthesis of functionalized tricarboxamides at room temperature using CuI nanoparticles as catalyst. This method involved fivecomponent coupling reactions of Meldrum＇s acid, isocyanides with aromatic aldehydes and amines at room temperature. Atom economy, wide range of products, excellent yields in short time and mild reaction conditions are some of the important features of this protocol. Notably, this catalyst could be recycled and reused for several times without significantly decreasing the catalytic activity.

关键词： TricarboxamidesCopper iodide nanoparticlesMulticomponent reactionsReusable catalyst

The Preparation of Some Novel Indazole Derivatives by Using Chalcones

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复旦学报（自然科学版） 2005年第5期44卷 789-790页

作者： javad safaei-Ghomi Zohreh Alishahi Department of Chemistry Faculty of Science University of Kashan87317-51167 Kashan I.R.IranDepartment of Chemistry Faculty of Science University of Kashan87317-51167 Kashan I.R.Iran

Indazole and its derivatives have little biological significance and have not been found in natural products due to the difficulty for living organisms to construct an N - N bond. Indazole derivatives exhibit variety of pharmacological properties such as anti-inflammatory, antidepressant, antitumor, antiarthritic and analgesic activities[1]. Different synthetic pathways generate these compounds. For instance, ring closure of pyrazole moiety, addition of hydrazine derivatives to carbonyl compounds[2] and cycloaddition reaction[3]. Herein, we report the synthesis of some new indazole derivatives by using chalcones as starting materials.

关键词：吲唑查耳酮芳基丙烯酰芳烃联氨醇醛缩合分子

SnCl_2/nano SiO_2: A green and reusable heterogeneous catalyst for the synthesis of polyfunctionalized 4H-pyrans

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Chinese Chemical Letters 2013年第10期24卷 921-925页

作者： javad safaei-Ghomi Raheleh Teymuri Hossein Shahbazi-Alavi Abolfazl Ziarati Department of Organic Chemistry Faculty of ChemistryUniversity of Kashan

A highly efficient and general method for the synthesis of polyfunctionalized 4H-pyrans is established through a one-pot multicomponent cyclocondensation of aromatic aldehydes with CH acids, malononitrile and ethyl acetoacetate using nano silica supported tin （II） chloride as a catalyst. In this method SnCl2/nano Si02 was used as green and reusable catalyst. Excellent yields, short reaction times, simple workup, and inexpensiveness and commercially availability of the catalyst are the advantages of this method.

关键词： Nano silica supported tin (11) chloride Polyfunctionalized 4H-pyrans Multicomponent reactions Heterogeneous catalyst

Alumina as an Efficient Catalyst for the Preparation of Sulfonyl Hydrazides and Sulfonyl Semicarbazides Under Solvent-free Conditions

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复旦学报（自然科学版） 2005年第5期44卷 879-880页

作者： javad safaei-Ghomi Aboalfazl Abbaszadeh-Nooshabady Department of Chemistry Faculty of Science University of Kashan87317-51167 Kashan I.R.IranDepartment of Chemistry Faculty of Science University of Kashan87317-51167 Kashan I.R.Iran

Sulfonyl hydrazide and sulfonyl semicarbazide derivatives exhibit variety of bactriostatic activity and also are important compounds as blowing agents in cellular rubber and plastics[1]. Different methods for the preparation of these compounds are reported for example, sulfonyl semicarbazides are prepared by reaction of a sulfonyl hydrazides with urea or cyanic acid[2], reaction of sulfinic acid salt with azodicarbonamide in water[3],and reaction of sulfonyl chloride and semicarbazide[4]. In lots of these methods the yields are not high, the solvents are toxic (pyridine)[5] and also the starting materials are not commericaly available[6]. We now report a modified and convenient procedure for the preparation of these compounds under solvent-free condition.

关键词：氧化铝磺酸盐氨基脲氨基硫脲催化剂

A highly flexible green synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives with CuI nanoparticles as catalyst under solvent-free conditions

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Chinese Chemical Letters 2014年第3期25卷 401-405页

作者： javad safaei-Ghomi Hossein Shahbazi-Alavi Abolfazl Ziarati Raheleh Teymuri Mohammad Reza Saberi Department of Organic Chemistry Faculty of ChemistryUniversity of Kashan

CuI nanoparticles as an efficient catalyst have been used for the preparation of 1H-pyrazolo[l,2- b]phthalazine-5,10-diones by the four-component condensation reaction of phthalic anhydride, hydrazine monohydrate, aromatic aldehydes and malononitrile or ethyl cyanoacetate under solvent- free conditions in good to excellent yields, short reaction times and environmentally benign, milder reaction conditions.

关键词： NanoparticlesMulti-component reactionsSolvent-freePyrazolophthalazine

Triphosgene as an Efficient and Electrophilic Reagent for the One-pot Synthesis of Sulfonylsemicarbazids

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复旦学报（自然科学版） 2007年第5期46卷 779-页

作者： javad safaei-Ghomi Department of Chemistry University of Kashan

1 Results Sulfonylsemicarbazide derivatives are important compounds as blowing agents in cellular rubber and plastics[1]. Different methods for the preparation of these compounds are reported. For example, sulfonylsemicarbazides are prepared by reaction of sulfinic acid salt with azodicarbonamide in water[2] and reaction of sulfonylchloride with semicarbazide[3-4]. In these methods the yields of products are not high[3-4], the solvent such as pyridine is toxic and also the sulfinic acid salt as starting...

关键词： triphosgene sulfonylhydrazide sulfonylsemicarbazide

Progress and prospects of two-dimensional materials for membrane-based osmotic power generation

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Nano Research Energy 2022年第1期1卷 110-124页

作者： javad safaei Guoxiu Wang Centre for Clean Energy Technology School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneySydneyNew South Wales 2007Australia

The electrical energy that can be harnessed from the salinity difference across the sea water and river water interface can be one of the sustainable and clean energy resources of the *** energy can be harnessed via the nanofluidic channels that selectively permeate *** selective diffusion of cations and anions can produce electricity through reverse ***-dimensional(2D)materials are a class of nanomaterials that hold great promise in this *** breakthrough works have been previously published which demonstrate the high electrical power densities of 2D *** ion transportation can be either through the nano-sized in-plane pores or interlayer spacings of 2D *** review article highlights the progress in 2D materials for salinity gradient power *** types of 2D membranes with various nano-architectures are discussed in this review *** include atom-thick 2D membranes with nanopores,2D lamellar membranes,2D lamellar membranes with nanopores,2D/one-dimensional(1D),and 2D/2D hybrid *** fabrication techniques,physical characteristics,ion transportation properties,and the osmotic power generation of these 2D membranes are elaborated in this review ***,we overview the future research direction in this *** is envisioned that the research on 2D materials can make practical salinity gradient power generation one step closer to reality.

关键词： 2D materials osmotic power generation reverse electrodialysis nanofluidics ion transportation

Defect and interface control on graphitic carbon nitrides/upconversion nanocrystals for enhanced solar hydrogen production

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National Science Open 2023年第2期2卷 76-88页

作者： Xiaochun Gao Nailiang Yang Jin Feng Jiayan Liao Shaoqi Hou Xiaoguang Ma Dawei Su Xingxing Yu Ziqing Yang javad safaei Dan Wang Guoxiu Wang Centre for Clean Energy Technology Faculty of ScienceUniversity of Technology SydneyBroadwayNSW 2007Australia School of Physics and Optoelectronic Engineering Ludong UniversityYantai 264000China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China School of Chemistry and Chemical Engineering Qufu Normal UniversityQufu 273165China Institute for Biomedical Materials and Devices(IBMD) Faculty of ScienceUniversity of Technology SydneyUltimoNSW 2007Australia

The effective utilization of solar energy for hydrogen production requires an abundant supply of thermodynamically active photo-electrons;however,the photocatalysts are generally impeded by insufficient light absorption and fast photocarrier ***,we report a multiple-regulated strategy to capture photons and boost photocarrier dynamics by devel-oping a broadband photocatalyst composed of defect engineered g-C_(3)N_(4)(DCN)and upconversion NaYF4:Yb^(3+),Tm^(3+)(NYF)*** a precise defect engineering,the S dopants and C vacancies jointly render DCN with defect states to effectively extend the visible light absorption to 590 nm and boost photocarrier separation via a moderate electron-trapping ability,thus facilitating the subsequent re-absorption and utilization of upconverted photons/***,we found a promoted interfacial charge polarization between DCN and NYF has also been achieved mainly due to Y-N interaction,which further favors the upconverted excited energy transfer from NYF onto DCN as verified both theoretically and *** a 3D architecture,the NYF@DCN catalyst exhibits a superior solar H2 evolution rate among the reported upconversion-based system,which is 19.3 and 1.5 fold higher than bulk material and DCN,*** work provides an innovative strategy to boost solar utilization by using defect engineering and building up interaction between hetero-materials.

关键词： broadband precise defect engineering atomic interaction solar hydrogen production