602-25-5Relevant articles and documents
Synthesis of sterically crowded 9-nitrotriptycenes by the Diels–Alder cycloaddition reaction
Szupiluk, Artur
supporting information, p. 5251 - 5253 (2016/11/13)
The synthesis of novel sterically crowded triptycenes as attractive components for the construction of models for various molecular dynamic studies is reported. 9-Nitrotriptycenes were obtained by the Diels–Alder reactions between 9-nitroanthracene and tetrabromobenzyne as well as 1,4-dichloro-9-nitroanthracene and 2,6-dichlorobenzyne. Interesting regioselectivity relative to the central and terminal rings was observed. Moreover, 1,2,3,4-tetrabromo-9-nitrotriptycene was further functionalized to afford 1,2,3,4-tetrabromotriptycyl-9-ammonium tetrafluoroborate in two-steps. The impact of steric hindrance on the geometry of the molecule was estimated on the basis of single crystal X-ray diffraction data.
Polymerization of novel methacrylated anthraquinone dyes
Dollendorf, Christian,Kreth, Susanne Katharina,Choi, Soo Whan,Ritter, Helmut
supporting information, p. 453 - 459 (2013/04/23)
A new series of polymerizable methacrylated anthraquinone dyes has been synthesized by nucleophilic aromatic substitution reactions and subsequent methacrylation. Thereby, green 5,8-bis(4-(2-methacryloxyethyl)phenylamino)-1,4- dihydroxyanthraquinone (2), blue 1,4-bis(4-((2-methacryloxyethyl)oxy) phenylamino)anthraquinone (6) and red 1-((2-methacryloxy-1,1- dimethylethyl)amino)anthraquinone (12), as well as 1-((1,3-dimethacryloxy-2- methylpropan-2-yl)amino)anthraquinone (15) were obtained. By mixing of these brilliant dyes in different ratios and concentrations, a broad color spectrum can be generated. After methacrylation, the monomeric dyes can be covalently emplaced into several copolymers. Due to two polymerizable functionalities, they can act as cross-linking agents. Thus, diffusion out of the polymer can be avoided, which increases the physiological compatibility and makes the dyes promising compounds for medical applications, such as iris implants.
Phenacenes from Diels-Alder trapping of photogenerated o-xylylenols: Phenanthrenes and benzo[e]pyrene bisimide
Ilhan, Faysal,Tyson, Daniel S.,Meador, Michael A.
, p. 577 - 580 (2007/10/03)
The synthesis of phenanthrene and benzo[e]pyrene bisimides, 1 and 2, was accomplished via the Diels-Alder trapping of sterically congested o-xylylenols photochemically generated from 3,6-dibenzoyl-o-xylene and 1,4-dibenzoyl-9,10- dihydroanthracene, respec