NIR TO SWIR FLUORESCENT COMPOUNDS FOR IMAGING AND DETECTION
申请人:PERKINELMER HEALTH SCIENCES, INC.
公开号:US20190100654A1
公开(公告)日:2019-04-04
This disclosure provides a family of compounds that absorb and fluoresce in the short wave infrared region (SWIR, optionally 1000 nm to 1300 nm), including hydrophilic compounds that exhibit absorption and emission spectral profiles in aqueous solutions substantially similar to those observed in organic solvents such as methanol or DMSO. The compounds can be chemically linked to biomolecules including proteins, nucleic acids, and therapeutic small molecules. The compounds are useful for imaging in a variety of medical, biological and diagnostic applications, including SWIR in vivo imaging of regions of interest within a mammal.
Triethynylmethanol Derivatives: Stable Acetylenic Building Blocks for Surface Chemistry
作者:Dominik Prenzel、Tim Sander、Julian Gebhardt、Himadri Soni、Frank Hampel、Andreas Görling、Sabine Maier、Rik R. Tykwinski
DOI:10.1002/chem.201604404
日期:2017.2.3
and this allows structural tuning for stabilization, synthetic derivatization, and adsorption on Ag(111) or Au(111). X‐ray crystallography helps to explain the surprising stability of the selected derivatives in the solid state, and an unusual form of hydrogen bonding is identified from these analyses. Preliminary efforts to achieve surface‐based reactions on Ag(111) and Au(111) are outlined experimentally
An Unexpected Domino Reaction of β-Keto Sulfones with Acetylene Ketones Promoted by Base: Facile Synthesis of 3(2<i>H</i>
)-Furanones and Sulfonylbenzenes
作者:Wei Tong、Qian-Yu Li、Yan-Li Xu、Heng-Shan Wang、Yan-Yan Chen、Ying-Ming Pan
DOI:10.1002/adsc.201700830
日期:2017.11.23
An unexpected domino reaction of β‐keto sulfones with acetylene ketones has been developed. The domino reaction of β‐keto sulfones with diynones proceeded smoothly in the presence of 30 mol% K2CO3 without other additives, and afforded the novel 3(2H)‐furanone derivatives. On replacing the diynones with terminal alkyne ketones, the reaction regioselectivity was changed and sulfonylbenzenes were obtained
β-酮砜与乙炔酮发生了意想不到的多米诺反应。在没有其他添加剂的情况下,在30 mol%K 2 CO 3的存在下,β-酮砜与二炔酮的多米诺反应顺利进行,得到了新颖的3(2 H)-呋喃酮衍生物。用末端炔烃酮取代二炔酮后,反应区域选择性改变,并通过苯环化获得磺酰苯,收率很高。
An Efficient and Facile Synthesis of Highly Substituted 2,6-Dicyanoanilines
A one-pot procedure for the synthesis of substituted 2,6-dicyanoanilines starting from readily available ynones and malononitrile has been developed. For instance, penta-1,4-diyn-3-one is converted into the acetylene-substituted aniline derivative 1 in good yield. Upon photoexcitation, this chromophore shows a strong blue emission with a high quantum yield. The ground- and the excited-state geometries
作者:Mohamed Oukessou、Yves Génisson、Dounia El Arfaoui、Abdeslem Ben-Tama、El Mestafa El Hadrami、Remi Chauvin
DOI:10.1016/j.tetlet.2013.05.138
日期:2013.8
The formation of the tris(3-benzyl-triazol-5-yl)carbenium cation, a heterocyclic analogue of the trityl cation, from tris(3-benzyl-triazol-5-yl)methanol, itself generated by Cu(I)-catalyzed Huisgen reaction of benzyl azide with triethynylmethanol, in the presence of trifluoroacetic anhydride is evidenced through a selective SN1 reactivity with various O-, N-, S-, and C-nucleophiles, giving the corresponding
由三(3-苄基-三唑-5-基)甲醇本身生成的三(3-苄基-三唑-5-基)碳鎓阳离子,三苯甲基阳离子的杂环类似物,本身由Cu(I)-生成在三氟乙酸酐存在下,苄基叠氮化物与三乙炔基甲醇催化的惠斯根反应通过与各种O-,N-,S-和C-亲核试剂的选择性S N 1反应来证明,从而以中等至高收率提供了相应的三唑基甲烷衍生物。