Samarium diiodide promoted formation of 1,2-diketones and 1-acylamido-2-substituted benzimidazoles from N-acylbenzotriazoles
作者:Xiaoxia Wang、Yongmin Zhang
DOI:10.1016/s0040-4020(03)00575-1
日期:2003.6
N-Acylbenzotriazoles, when treated with samarium diiodide in THF, undergo self-coupling reaction to afford 1,2-diketones in good to excellent yields; while when treated with samarium diiodide in CH3CN, they undergo ring-opening reaction to afford 1-acylamido-2-alkyl (or aryl) benzimidazoles in reasonable to good yields. A plausible mechanism was suggested.
Pyrazino-[2,3-f][1,10]phenanthroline as a new anchoring group of organic dyes for dye-sensitized solar cells
作者:Li-Peng Zhang、Ke-Jian Jiang、Qiang Chen、Gang Li、Lian-Ming Yang
DOI:10.1039/c5ra05349h
日期:——
Two novel donor–acceptor organic dyes (PPL-1 and PPL-2) with pyrazino-[2,3-f][1,10]phenanthroline as an electron-withdrawing anchoring group displayed a promising power conversion efficiency of 4.04% under standard AM 1.5 conditions.
Monomer 5, 6-Diphenyl-1.2.4-Traizinic Derivatives and the Use Thereof
申请人:Rey Jerome
公开号:US20080299055A1
公开(公告)日:2008-12-04
The invention relates to the use of 5,6-diphenyl-1,2,4-triazinic compounds of general formula (I), wherein cycle penetrating bonds display an ortho, meta or para indifferent substitution position, identical or different R
1
and R
2
represent a hydrogen, fluoride, chloride or bromine atom, C
1
to C
12
linear or branched alkyl, C
1
A C
18
linear or branched hydroxy, alkoxy poly(ethoxy)-alkoxy with a C
1
to C
4
alkyl fragment and an ethoxy number ranging from 1 to 4, amino or mono or di-alkylamino with a C
1
to C
4
alkyl fragment group, R
3
represents a chlorine atom, a hydroxy, amino, a phenyl possibly 1 to 3 times substituted by a hydroxy radical situated at least in a para or phenyl position possibly 1 to 3 times substituted in an ortho, meta or para position by a C
1
to C
12
alkoxy or cyano or alkymino group with a C
1
to C
7
alkyl fragment in the form of active sun filters or light-protective agents and to cosmetic composition containing said compounds.
A water-soluble pyrazino[2,3-g]quinoxaline photosensitizer was synthesized and exhibited excellent performance for both one- and two photon excited bioimaging and photodynamic therapy.