检索结果-南通市图书馆

可见光介导炔烃的自由基1,2-官能团化反应新进展

在线全文

学校读者我要写书评

暂无评论

化学学报 2024年第6期82卷 658-676页

作者：李康葵龙先扬黄岳祝诗发华南理工大学化学与化工学院广东省功能分子工程重点实验室广州510640 浙江理工大学化学与化工学院杭州310018

作为有机分子中最基本的官能团之一,包含两个π键的碳碳三键蕴藏着多样有机转化的巨大潜力.其中,基于自由基对炔烃加成的官能团化反应是合成多样的功能化烯烃、酮,乃至烷烃分子的有效途径,同时也是构建多个化学键的重要手段.近十几年来... 详细信息

作为有机分子中最基本的官能团之一,包含两个π键的碳碳三键蕴藏着多样有机转化的巨大潜力.其中,基于自由基对炔烃加成的官能团化反应是合成多样的功能化烯烃、酮,乃至烷烃分子的有效途径,同时也是构建多个化学键的重要手段.近十几年来,由于可见光介导的自由基反应策略符合绿色化学和可持续发展的理念,使得这种策略在炔烃官能团化方面的应用受到了广泛的关注.时至今日,光介导炔烃的自由基官能团化反应得到了空前的发展,随之涌现出许多新方法.本文主要综述了近五年来可见光介导炔烃的自由基1,2-官能团化反应的新进展,以构建的化学键种类进行分类,对涉及的自由基种类和反应类型进行了系统总结.分析讨论了反应的机理、普适性以及优势与不足,并对该领域所面临的挑战和机遇进行了展望.

关键词：可见光炔烃自由基反应官能团化光催化

渤海湾盆地桩海地区古近系沙河街组一段-二段混积岩优质储层特征与控制因素

在线全文

学校读者我要写书评

暂无评论

石油与天然气地质 2024年第4期45卷 1106-1120页

作者：佟欢朱世发崔航蔡文典马立驰中国石油大学(北京)油气资源与工程全国重点实验室北京102249 中国石油大学(北京)地球科学学院北京102249 中国石化石油勘探开发研究院北京102206

渤海湾盆地桩海地区古近系沙河街组一段-二段广泛发育混积岩。近年来桩海地区混积岩油气勘探不断取得突破,已逐渐成为古近系重要的勘探目标。利用岩心观察、薄片鉴定、扫描电镜观察及孔-渗分析等技术手段,研究了桩海地区混积岩储层特征... 详细信息

渤海湾盆地桩海地区古近系沙河街组一段-二段广泛发育混积岩。近年来桩海地区混积岩油气勘探不断取得突破,已逐渐成为古近系重要的勘探目标。利用岩心观察、薄片鉴定、扫描电镜观察及孔-渗分析等技术手段,研究了桩海地区混积岩储层特征及优质储层控制因素。结果表明:混积岩中的陆源碎屑颗粒多为近源沉积,岩石成分成熟度低。来自长堤凸起的岩屑主要为中-酸性喷出岩岩屑,来自埕岛凸起的岩屑主要为石英岩等变质岩岩屑。用陆源碎屑、化学成因泥晶碳酸盐、生物成因碳酸盐颗粒为三端元,将混积岩划分为以陆源碎屑为主的混积岩(陆源碎屑含量在50%~85%)、以化学沉淀碳酸盐为主的混积岩(化学沉淀碳酸盐含量在50%~90%)、正混积岩(三组分均<50%)、以生物碎屑为主的混积岩4类。其中以生物碎屑为主的混积岩储层物性最好,平均孔隙度为15%~25%,储集空间主要为原生粒间孔和生物碎屑孔。泥晶化作用和环边亮晶胶结作用在以生物碎屑为主的混积岩中发育程度最高,二者形成的刚性格架使得原生孔隙得以保留。大气水淋滤和有机酸充注有利于储层次生孔隙的发育。碳酸盐嵌晶胶结在正混积岩中最发育,持续的压实作用对以化学沉淀碳酸盐为主的混积岩影响最大。沉积期较高的岩石结构成熟度和较高的生物碎屑含量,准同生期泥晶包壳的发育、大气淡水的淋滤以及环边亮晶胶结物的发育,埋藏成岩期发生的较强有机酸溶蚀是优质混积岩储层形成的有利条件。

关键词：成岩作用沙河街组一段-二段混积岩储层古近系桩海地区渤海湾盆地

维普期刊数据库博看期刊

“沉积岩石学”课程思政建设与探索——以中国石油大学(北京)为例

在线全文

学校读者我要写书评

暂无评论

中国地质教育 2024年第2期33卷 80-84页

作者：朱世发佟欢高艺珊中国石油大学(北京)地球科学学院北京102249

“沉积岩石学”作为地质类专业学生的一门核心必修课程,承担着培养高素质创新型地学人才的责任和使命。秉承党中央强调的“把思政工作贯穿教育教学全过程”理念,文章以中国石油大学(北京)“沉积岩石学”课程为例,通过挖掘思政元素、探... 详细信息

“沉积岩石学”作为地质类专业学生的一门核心必修课程,承担着培养高素质创新型地学人才的责任和使命。秉承党中央强调的“把思政工作贯穿教育教学全过程”理念,文章以中国石油大学(北京)“沉积岩石学”课程为例,通过挖掘思政元素、探索融入策略、设计教学考核三大步骤,从人文教育、环保教育、地质灾害科普教育三个方面着手,致力于专业知识传授与思想政治教育双重育人效果,为切实开展地质专业课程思政教学奠定坚实的基础。

关键词：沉积岩石学课程思政教学案例

TEMPO-Regulated Regio-and Stereoselective Cross-Dihalogenation with Dual Electrophilic X^(+) Reagents

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2021年第11期39卷 3004-3010页

作者： Yi Kong Tongxiang Cao shifa zhu Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouGuangdong510640 China

A TEMPO catalyzed cross-dihalogenation reaction was established via redox-regulation of the otherwise complex system of dual electrophilic X+***,the ICl,BrCl,I_(2) and Br_(2) were generated in-situ,which enabled high regio-or stereoselective access to a myriad of iodochlorination,bromochlorination and homo-dihalogenation products with a wide spectrum of *** its mild conditions and operational simplicity,this method could enable wide applications in organic synthesis,which was exemplified by divergent synthesis of two *** mechanistic investigations via radical clock reaction,pinacol ring expansion and Hammett experiments were conducted,which confirmed the intermediacy of halonium *** addition,a dynamic catalytic model based on the versatile catalytic role of TEMPO was proposed to explain the selective outcomes.

关键词： Halogenation Organocatalysis Electrophilic addition Redox-regulation Alkynes

Rapid Access to Oxabicyclo[2.2.2 ]octane Skeleton through Cu(I)- Catalyzed Generation and Trapping of Vinyl-o-quinodimethanes (Vinyl-0-QDMs)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2020年第10期38卷 1052-1056页

作者： Hejiang Luo Chuan He Huanfeng Jiang shifa zhu Key Laboratory of Functional Moleculor Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouGuangzhou 510640China

Summary of main observation and conclusion A Cu(I)-catalyzed three-component reaction of terminal enynals/enynones,diazo compounds,and al kenes has been *** this method,a series of oxabicyclo[2.2.2]octanes were effectively synthesized in high yields under mild reaction *** transformation is proposed to proceed through trapping of the cyclic vinyl-o-quinodimethanes(vinyI-o-QDMs)species,which were generated from terminal enynals/enynones and diazo compounds by *** obvious advantages of wide substrate scopes,mild reaction conditions,and high seteroselectivity and atom eficiency make this reaction highly appealing for construction of highly rigid[2.2.2]octane skeleton.

关键词： octane ethane skeleton

Stratal Slice Recognition of Thin Shallow-Water Delta Sandbodies in the Songliao Basin

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2016年第2期90卷 763-764页

作者： zhu Xiaomin ZENG Hongliu DONG Yanlei zhu shifa China University of Petroleum Beijing 102249 China Bureau of Economic Geology Jackson School of Geosciences The University of Texas at Austin Texas 78712 USA

Objective China＇s petroleum exploration has entered a new stage of finding deeply buried thin sandbodies lbr the abundant oil resources they contain. Here thin sandbodies refer to those less than 10 m in thickness, or even less than 1-2 m. It is difficult to depict thin-layer sandbodies of different genetic types using conventional core, well logging and seismic data due to their limited vertical resolution in petroliferous basins. However, seismic sedimentology provides a new research method especially tbr thin sandbody interpretation, i.e., validating interpreted sedimentary sandbodies from 3D seismic data based on horizontal resolution, stratal slice and seismic geomorphology interpretation. At present, a series of studies on seismic sedimentology in North America marine basins and elsewhere have been completed successfully and are relevant to the exploration and development of oil and gas fields.

关键词： Stratal Slice Recognition of Thin Shallow-Water Delta Sandbodies in the Songliao Basin

Synergy of activating substrate and introducing C–H…O interaction to achieve Rh2(II)-catalyzed asymmetric cycloisomerization of 1,n-enynes

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2020年第9期63卷 1230-1239页

作者： Rui Wu Kai Chen Jun Ma Zhi-Xiang Yu shifa zhu Key Lab of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China Beijing National Laboratory for Molecular Sciences(BNLMS) Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking UniversityBeijing 100871China

We report the first Rh2(II)-catalyzed asymmetric cycloisomerization of activated enynes to provide cyclopropane-fused tetrahydropyridines in good yields and excellent enantioselectivities under mild *** activated group,CHZ(Z is electronwithdrawing group(EWG)),in the enyne substrates exerts two synergetic roles,one is to activate alkyne for the cyclopropanation reaction;the other is to introduce the C–H…O interaction between substrate and catalyst(reducing the energy barrier of the reaction).This double-mode activation was supported by both density functional theory(DFT)calculations and experimental *** strategy was also extended to other CH2 Z(Z can be OH,OMe,F)as activating groups that made the CH2 more acidic so that the substrates could also form increased C–H…O interaction with the catalyst.

关键词： asymmetric cycloisomerization chiral cyclopropane dirhodium catalysis carbene

Identification Marks of Cretaceous Shallow-Water Delta in the Songliao Basin,China

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2016年第6期90卷 2289-2290页

作者： zhu Xiaomin LI Shunli ZENG Hongliu DONG Yanlei zhu shifa China University of Petroleum(Beijing) Beijing 102249China Bureau of Economic Geology Jackson School of GeosciencesThe University of Texas at AustinTexas 78712USA

Shallow-water deltas are now a research focus of international sedimentology. Researchers have recently discovered that water depth is an important controlling factor for the development of shallow deltas, and that significant differences exist between shallow-water deltas and the traditional Gilbert deltas. The identification marks of shallow-water deltas are critical for better understanding sedimentary characteristics of these deltas. In continental basins, especially China＇s Mesozoic and Cenozoic continental basins, shallow-water deltas are widely developed. Thus, this work took the Songliao Basin as an example to analysis this kind of deltas.

关键词： Identification Marks of Cretaceous Shallow-Water Delta in the Songliao Basin China

Genetic Mechanism of Dolomitization in Fengcheng Formation in the Wu-Xia area of Junggar Basin,China

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2012年第2期86卷 447-461页

作者： zhu shifa zhu Xiaomin NIU Huapeng HAN Xuefang ZHANG Yueqian YOU Xincai State Key Laboratory of Petroleum Resource and Prospecting Beijing 102249China College of Geosciences China University of Petroleum(Beijing)Beijing 102249China Tianjin Exploration and Development Research Institute CNOOCTianjin 300452China Research Institute of Petroleum Exploration and Development Xinjiang Oilfield CompanyCNPCKaramayXinjiang 834000China

The dolomitic rocks of the Fengcheng Formation are considered to be formed under special geologic conditions, and are significant hydrocarbon reservoir rocks in the Wu-Xia area in the Junggar Basin. Analyses of petrologic characteristics and stable isotope composition indicate that the dolomitizing host rock is volcanic and the dolomitizing fluids probably consists of brine from shore- shallow lakes with great evaporation and salinity in the Fengcheng Formation, which have formed under arid climatic conditions, as well as residual Mg-rich seawater from the underlying Jiamuhe Formation and Carboniferous. Dust tuff in the area has significant plagioclase content. Anorthite and labradorite hydrolysis by CO2 can be coupled with calcite precipitation. Late Mg-rich brine percolated and replaced calcite formed in the early time, which lead to precipitate dolostones with different occurrences, such as graniphyric, random bedded or lumpy. The diagenetic dolostones with different occurrences resulting from particular formation conditions occurred in different tectonic settings. The dolomitizing fluid has been driven by the thermal convection flow generated by volcanic eruptions. At the same time, the overthrusts of the Wu-Xia growth fault have speeded up the flow of deep Mg-rich water upwards, and induced the water to quickly penetrate and horizontally migrate in the strata. Fracture is the major and the most important reservoir space in dolomitic reservoir of the Fengcheng Formation. Fracture and fault plays a decisive role in controlling the formation of dolostone and the distribution of favorable reservoirs. The deliverability of oil and gas is determined by the development and match relations of dissolved pores and fractures to a certain degree.

关键词： diagenetic dolostone volcanics fracture Fengcheng Formation Junggar basin