43100-50-1Relevant academic research and scientific papers
Generation of arylated quinones by iron-catalyzed oxidative arylation of phenols: Formal synthesis of phellodonin, sarcodonin ε, leucomelone and betulinan A
Deb, Arghya,Agasti, Soumitra,Saboo, Tapish,Maiti, Debabrata
supporting information, p. 705 - 710 (2014/04/03)
Biologically and pharmaceutically relevant arylated quinones (Quin-Ar) have been synthesized via direct C-H arylation of a variety of phenols using arylboronic acids. An inexpensive, environmentally friendly iron catalyst, ferric sulphate, Fe2(SO4)3, was employed in this operationally simple and efficient method.
The direct arylation of benzoquinones with arylboronic acid promoted by iron(II) oxalate
Huanga, Yibo,Guanb, Dan
, p. 649 - 651 (2014/01/17)
Arylations of various quinones with several arylboronic acids have been developed. The reactions proceed readily at ambient temperature using iron(II) oxalate as a catalyst and potassium persulfate as a co-oxidant. The mechanism is presumed to proceed through a nucleophilic radical addition to the quinone with in situ reoxidation of the resulting dihydroquinone.
FeSO4-promoted direct arylation of benzoquinones with ArB(OH)2 or ArBF3K
Komeyama, Kimihiro,Kashihara, Tetsuya,Takaki, Ken
supporting information, p. 1084 - 1086 (2013/04/10)
FeSO4·7H2O was proven to work as effective promoter for the direct arylation of benzoquinones with aryl boronic acids in the presence of K2S2O8. In the arylation, slow addition of iron solution was crucial to efficiently proceed with the reaction. Interestingly, the Fe-mediated arylation could be converted into a catalytic reaction by using hydroquinones, instead of benzoquinones, or addition of ascorbic acid.
Iron-mediated direct arylation with arylboronic acids through an aryl radical transfer pathway
Wang, Jian,Wang, Shan,Wang, Gao,Zhang, Ji,Yu, Xiao-Qi
supporting information, p. 11769 - 11771 (2013/01/15)
A novel iron-mediated direct C-H arylation of quinones and pyridine analogues with arylboronic acids has been developed using dichloromethane and water as solvents at ambient temperature. FeS is employed and serves as an efficient catalyst. A detailed reaction mechanism is speculated and expounded.
Reactive dyestuffs
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, (2008/06/13)
Triphendioxazine reactive dyestuffs of the general formula STR1 with the substituent definition given in the description, are outstandingly suitable for dyeing and printing materials containing hydroxyl groups or amide groups. They give red dyeings with high wet- and light-fastnesses.
Triphendioxazine dyestuffs
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, (2008/06/13)
Triphendioxazine dyestuffs of the formula STR1 having the substituent meanings specified in the descriptive part, are highly suitable for dyeing and printing hydroxyl- or amido-containing materials, in particular fibre materials, and produce wash-fast dyeings and prints.
