A solid acetylene reagent with enhanced reactivity: fluoride-mediated functionalization of alcohols and phenols
作者:Georg Werner、Konstantin S. Rodygin、Anton A. Kostin、Evgeniy G. Gordeev、Alexey S. Kashin、Valentine P. Ananikov
DOI:10.1039/c7gc00724h
日期:——
The direct vinylation of an OH group in alcohols and phenols was carried out utilizing a novel CaC2/KF solid acetylene reagent in a simple K2CO3/KOH/DMSO system. The functionalization of a series of hydroxyl-group-containing substrates and the post-modification of biologically active molecules were successfully performed using standard laboratory equipment, providing straightforward access to the corresponding
Intramolecular Triplet Energy Transfer in Flexible Molecules: Electronic, Dynamic, and Structural Aspects
作者:Peter J. Wagner、Petr Klán
DOI:10.1021/ja990224l
日期:1999.10.1
Exothermic intramolecular triplet energy transfer (TET) rate constants in various flexible bichromophoric systems D-(CH2)n-O-A (D = benzoyl, 4-methylbenzoyl; A = 2-naphthyl, 4-, 3-, 2-biphenyl; n = 3−14) have been determined from steady-state quenching and quantum yield measurements. The magnitude of the rate constants in molecules where n = 3 is comparable to those in molecules with a rigid spacer between
Synthesis of 6-Fluoroalkyl 6<i>H</i>-Benzo[<i>c</i>]chromenes via Visible-Light-Promoted Radical Addition/Cyclization of Biaryl Vinyl Ethers
作者:Qinfei Deng、Liping Tan、Yan Xu、Ping Liu、Peipei Sun
DOI:10.1021/acs.joc.8b01149
日期:2018.6.1
visible-light-promoted cascade cyclization reaction for the synthesis of 6-fluoroalkyl 6H-benzo[c]chromenes has been successfully realized, which was initiated by intermolecular radical addition to biaryl vinylethers using easily available fluoroalkylated reagents BrCF2CO2Et or 2-bromo-2,2-difluoroamides as the sources of fluorinated radicals, followed by the cyclization onto an aromatic ring process
已成功实现了一种新型的可见光促进的级联环化反应,用于合成6-氟烷基6 H-苯并[ c ]色烯,该反应是通过使用容易获得的氟代烷基化试剂BrCF 2 CO 2将分子间自由基加成到联芳基乙烯基醚中而引发的以Et或2-溴-2,2-二氟酰胺为氟化自由基的来源,然后环化成芳环过程。该方案可耐受各种官能团,并以中等至良好的产率提供所需的产物。
CURABLE COMPOSITION, CURED PRODUCT, AND COMPOUND
申请人:TOKYO OHKA KOGYO CO., LTD.
公开号:US20220177641A1
公开(公告)日:2022-06-09
a curable composition that gives a cured product exhibiting a high refractive index and a surface without defects such as roughness or cracks, a cured product of the composition, and a compound that may be blended to the composition. In a curable composition including a triazine compound having three aromatic-ring-containing groups each bonded to the triazine ring via an amino group, an aromatic-ring-containing group having a specific structure having a radically polymerizable group-containing group or a cationically polymerizable group-containing group is used as at least one of the three aromatic-ring-containing groups bonded to the triazine ring in the triazine compound mentioned above.
Novel phosphorus-containing compounds and their preparing process and use
申请人:Chang Chun Plastics Co., Ltd.
公开号:EP2116549A2
公开(公告)日:2009-11-11
A series of novel phosphorus-containing compounds having the following formula are disclosed:
wherein
R1-R12, A, B, D, X, and Y are as defined in the specification. A process for the preparation of the compound of formula (1), a curing agent, and a flame resistant epoxy resin and a preparation process thereof are also provided.
本研究公开了一系列具有下式的新型含磷化合物:
其中
R1-R12、A、B、D、X 和 Y 如说明书中所定义。还提供了一种制备式(1)化合物、固化剂和阻燃环氧树脂的工艺及其制备方法。