Synthesis of 9,10-Phenanthrenequinones by Photocyclization of Derivatives of Benzoins: Scope and Limitation of the Methodology
摘要:
Symmetric 9,10-phenanthrenequinones with methyl, methoxy, and chloro substituents at the 3 and 6 positions have been synthesized by photocyclization of 4,5-bis-(aryl)-2-phenyl-1,3,2-dioxaboroles and 2,3-diaryldioxenes followed by oxidative hydrolysis.
2,4,4,6-Tetrabromocyclohexa-2,4-dienone: a new electron acceptor in the photosensitized oxidation of unsaturated substrates
作者:Luigi Lopez、Vincenzo Calò
DOI:10.1039/c39840001266
日期:——
2,4,4,6-Tetrabromocyclohexa-2-4-dienone, usually used as a mild and selective brominating agent, acts as an electronacceptor in the sensitized photo-oxygenation of several unsaturatedsubstrates; a mechanism is proposed.
Alkoxy(aryl) adamantylidenes react with chromium(VI) or molybenum(VI) oxide diperoxides in CHCl3 under argon yielding the corresponding 1,2-dioxetanes and/or carbonyl products derived from the fragmentation of the dioxetanes. The reaction most likely proceeds via preliminary epoxidation of the unsaturaled substrates.
Methyl-substituted poly(vinylnaphthalene) as a reversible singlet oxygen carrier
作者:Isao Saito、Ryu Nagata、Teruo Matsuura
DOI:10.1021/ja00308a028
日期:1985.10
Details de la preparation et des proprietes de polymeres endoperoxydes derives de PVNP substitues par des methyles
详细信息 de la preparees et des proprietes depolymeres endoperoxydes 衍生的 PVNP 替代物 par desmethyles
Micro-organizational control of photochemical oxidations: Rose bengal and derivatives (XV)
作者:D.C. Neckers、Jerzy Paczkowski
DOI:10.1016/s0040-4020(01)82048-2
日期:1986.1
we define a microheterogeneous photo-oxidation to be a photosensitized oxidation reaction whose efficiency is enhanced beyond that of diffusion control by the covalent bonding of a sensitizer to a ligand. The ligand is responsible for enhancing the local concentration of a specific substrate susceptible to reaction with an excited state derived from the proximate sensitizer. We illustrate the principle
Octahedral molybdenum cluster complexes with aromatic sulfonate ligands
作者:Olga A. Efremova、Yuri A. Vorotnikov、Konstantin A. Brylev、Natalya A. Vorotnikova、Igor N. Novozhilov、Natalia V. Kuratieva、Mariya V. Edeleva、David M. Benoit、Noboru Kitamura、Yuri V. Mironov、Michael A. Shestopalov、Andrew J. Sutherland
DOI:10.1039/c6dt02863b
日期:——
This article describes the synthesis, structures and systematic study of the spectroscopic and redox properties of a series of octahedral molybdenum metal cluster complexes with aromatic sulfonate ligands (nBu4N)2[Mo6X8}(OTs)6] and (nBu4N)2[Mo6X8}(PhSO3)6] (where X− is Cl−, Br− or I−; OTs− is p-toluenesulfonate and PhSO3− is benzenesulfonate). All the complexes demonstrated photoluminescence in the
本文介绍了具有芳族磺酸盐配体(n Bu 4 N)2 [Mo 6 X 8 }(OTs)6 ]和(ñ卜4 N)2 [沫6 X 8 }(PhSO 3)6 ](其中,X -是Cl - ,溴-或I - ;在职培训计划-是p甲苯磺酸盐和PhSO 3 -是苯磺酸盐)。所有的配合物均在红色区域显示出光致发光,并具有产生单线态氧的能力。值得注意的是,对于具有Mo 6 I 8 } 4+团簇核的配合物,发现了最高的量子产率(> 0.6)和最窄的发射带。此外,循环伏安法研究表明(n Bu 4 N)2 [Mo 6 X 8 }(OTs)6 ]和(n Bu 4 N)2 [Mo 6 X 8 }(PhSO 3)6相对于相应的起始配合物(n Bu 4 N)2 [Mo 6 X 8 } X 6 ]赋予了增强的对电化学氧化的稳定性。