6H-[2]benzopyrano[4,3-b]pyridin-6-one 、 [Ir(6H-[2]benzopyrano[4,3-b]pyridin-6-one(1-))2Cl]2 以
not given 为溶剂,
生成 fac-[Ir(6H-[2]benzopyrano[4,3-b]pyridin-6-one(1-))3]
Regioselective Radical Arylation of 3-Hydroxypyridines
作者:Michael C. D. Fürst、Leonard R. Bock、Markus R. Heinrich
DOI:10.1021/acs.joc.6b00894
日期:2016.7.1
The titanium(III)-mediated radical arylation of 3-hydroxypyridines was found to proceed with high regioselectivity for the 2-position. Using aryldiazonium chlorides, which were prepared from the corresponding anilines, as aryl radical sources, a range of 3-hydroxy-2-phenylpyridines were obtained in moderate to good yields under simple reaction conditions. Reactions of ortho-carboxylic ester substituted
Free radical reactions for heterocycle synthesis. Part 6: 2-Bromobenzoic acids as building blocks in the construction of nitrogen heterocycles
作者:Wei Zhang、Georgia Pugh
DOI:10.1016/s0040-4020(03)00381-8
日期:2003.4
A general method to construct a variety of nitrogen heterocycles is introduced. 2-Bromobenzoic acids or acid chlorides are used as the common building blocks to couple with appropriate nitrogen-containing compounds. Sequential aryl radical cyclizations including conjugate additions, spirocyclizations, homolytic and ipso aromatic substitutions, and 1,5-hydrogen atom transfers are employed to prepare
An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer comprising a phosphorescent emitter represented by Formula (I):
L
n
M (I)
wherein each L is a cyclometallated ligand with at least one containing a coumarin group, M is Ir or Pt, and n is 3 when M is Ir and 2 when M is Pt. The invention also comprised the compound of formula (I).
A visible-light RuII photoredox Meerwein synthesis of isochromanones and isochromenones is described starting from diazonium salts of differently substituted anthranilic acids and various alkenes. This approach has allowed the reliable and efficient preparation of structures found in many biologically active molecules or used in materials chemistry.
Syntheses of functionalized benzocoumarins by photoredox catalysis
作者:Qihong Lai、Shanyi Chen、Linnan Zou、Chengzhi Lin、Shuling Huang、Lailing Fu、Lina Cai、Shunyou Cai
DOI:10.1039/d2ob02225g
日期:——
We report a new method for the synthesis of functionalized benzocoumarins through the strategy of activation of multiple C–H bonds on 2-aryl toluenes under visible-light-enabled photoredox conditions.