73513-58-3

Upstream product

• 95-50-1 1,2-dichloro-benzene 
• 5348-42-5 4,5-Dichloro-1,2-phenylenediamine 

Downstream Products

• 4526-07-2 1,4-bis(trimethylsilyl)-1,3-butadiyne 
• 98127-33-4 1,2-bis((trimethylsilyl)ethynyl)-4,5-dichlorobenzene 
• 98127-32-3 1,2-dichloro-4,5-bis(ethynyl)benzene 

Relevant academic research and scientific papers

Selective Vicinal Diiodination of Polycyclic Aromatic Hydrocarbons

Vicinally diiodinated polycyclic aromatic hydrocarbons (I2-PAHs) are accessible from the corresponding diborylated B2-PAHs through boron/iodine exchange. The B2-PAHs have been prepared via twofold electrophilic borylation reactions templated by a vicinally disilylated benzene. Our protocol is applicable to fluorenes, acenes, annulated acenes, oligoaryls, and even [5]helicene. Using B2-naphthalene as the example, we have shown that the reaction scope can, in principle, be expanded to include the synthesis of vicinally dibrominated and dihydroxylated PAHs. The usefulness of the building blocks provided by our method in the field of optoelectronic materials was demonstrated by the successful conversion of I2-fluoranthene to the analogous doubly alkynylated fluoranthene emitter.

Toward Antikekulene: Angular 1,2-Di-, 2,3-Di-, and 1,2,15,16-Tetrachloro[6]phenylene

The synthesis of the first ring-functionalized heliphenes is described, comprised of angular 1,2-di-, 2,3-di-, and 1,2,15,16-tetrachloro[6]phenylene, via a series of Sonogashira couplings and cobalt-catalyzed alkyne cyclotrimerization steps. These molecul