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Engineers develop nanoparticles that cross the blood-brain barrier（图）
血脑屏障 纳米颗粒 胶质母细胞瘤 化疗药物
2023/6/19
There are currently few good treatment options for glioblastoma, an aggressive type of brain cancer with a high fatality rate. One reason that the disease is so difficult to treat is that most chemoth...
Solvent-Free Selective Cross-Aldol Condensation of Ketones with Aromatic Aldehydes Efficiently Catalyzed by a Reusable Supported Acidic Ionic Liquid（图）
cross-aldol condensation solvent-free condition supported acidic ionic liquid ketone aromatic aldehyde
2013/10/4
A newly prepared catalyst consisting of acidic ionic liquid 1-(4-sulfonic acid)butylpyridinium hydrogen sulfate supported on silica was used to catalyze the cross-aldol condensation of ketones with ar...
手性伯胺催化剂用于顺式选择性的不对称Cross-Aldol反应（图）
手性伯胺 有机催化 不对称催化 Cross-aldol反应
2013/10/12
基于酸碱作用,将手性伯胺与质子酸原位结合制得有机小分子催化剂,并用于醛与醛的不对称Cross-aldol反应.与一般手性仲胺催化剂不同,该类伯胺催化剂得到的是顺式选择性构型的Cross-aldol产物,其产率达 90%,顺反比和ee值分别为9:1和90%.相比而言,采用简单易得的(1S,2S)-(+)-环己二胺即可得到较高选择性的顺式产物.
Synthesis, Characterization and Surface Properties of Cross-linked Polyurethane Dispersions Modified by Organosiloxane
polydimethylsiloxane (PDMS) surface properties polyurethane
2009/11/13
A series of cross-linked polyether-polyester polyurethane dispersions modified with organosiloxane were prepared based on hydroxyl-terminated polydimethylsiloxane (HTPS) as hydrophobic component and 3...
EXPERIMENTAL STUDY ON THE PERFORMANCE LIMITATION OF MICRO HEAT PIPES OF NON CIRCULAR CROSS-SECTIONS
micro heat pipe non circular cross-section
2009/10/14
An experimental study of three different cross-sections (circular, semicircular and rectangular) of micro heat pipes having same hydraulic diameter (D = 3 mm) is carried out at three different inclina...
Membrane-Based Separation of Phenol/Water Mixtures Using Ionically and Covalently Cross-Linked Ethylene-Methacrylic Acid Copolymers
Phenol/Water Mixtures Ethylene-Methacrylic
2009/9/2
Membrane-based separation of phenol/water mixtures with concentrations of phenol between 3 wt% and 8 wt% in the feed has been performed with nonmodified as well as cross-linked ethylene-me...
Genipin Cross-Linked Polymeric Alginate-Chitosan Microcapsules for Oral Delivery: In-Vitro Analysis
Genipin Cross-Linked Polymeric Alginate-Chitosan Microcapsules Oral Delivery In-Vitro Analysis
2009/9/2
We have previously reported the preparation of the genipin cross-linked alginate-chitosan (GCAC) microcapsules composed of an alginate core with a genipin cross-linked chitosan membrane. This paper is...
期刊信息
篇名
Stereoselective Synthesis of (E,E)-1-Arylselenobutadienes by Cross-Coupling Reactions in the Presence of Palladium Catalyst
语种
英文
撰写或编译
作者
朱柳生,黄志真,黄宪
第一作者单位
刊物名称
Tetrahedron
页面
1996,52,9819
出版...