83495-28-7

Upstream product

• 83495-29-8 2-phenyl-4-thienyllithium 
• 38071-58-8 4-bromo-2-phenyl thiophene 

Downstream Products

• 1520923-54-9 2,5,8,11-tetraphenylcycloocta[1,2-b:4,3-b':5,6-b'':8,7-b''']tetrathiophene 

Relevant academic research and scientific papers

ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

This invention relates to compounds containing heterocycles or azaheterocycles and phenylene or azaphenylene wherein at least one ring is a five-membered ring. These novel compounds are useful as host materials for phosphorescent electroluminescent device

Palladium-Catalyzed Synthesis of Heteroarene-Fused Cyclooctatetraenes through Dehydrogenative Cyclodimerization

Arene-fused cyclooctatetraenes (COTs) possess unique structural and electronic properties that originate from their saddle-shaped π-conjugated architectures. Considerable attention has been paid to the transition-metal-mediated synthesis of these cyclic compounds; however, there have been limited achievements to date in the efficient construction of heteroarene-fused COTs. In this contribution, we report a novel Pd-catalyzed dehydrogenative cyclodimerization of biheteroarenes through four-fold C?H activation toward the synthesis of a series of heteroarene-fused COTs. A set of mechanistic investigations indicated the involvement of high-valent Pd species prior to the dimerization event in the catalytic cycle. The redox behavior of the obtained COTs is also described briefly.

Modification of organic compounds with Lawesson's reagent

Application in organic synthesis of Lawesson's reagent, 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide, provides a possibility to replace an oxygen atom for a sulfur atom in the carbonyl group of ketones, esters, amides, in ether group, and also either to induce a rearrangement of the initial structure of organic compounds with or without inclusion of sulfur atoms or to lead to the formation of various types of organophosphorus compounds. The formed organosulfur compounds exhibit a wide range of biological action.

Donor-acceptor cyclopropanes with Lawesson's and Woollins' reagents: Formation of bisthiophenes and unprecedented cage-like molecules

Furan-derived donor-acceptor-substituted cyclopropanes were reacted with Lawesson's reagent. Depending on the reaction conditions either bisthiophenes or unprecedented cage-like molecules were obtained. Woollins' reagent always led to the respective selen

UNSYMMETRICAL COUPLING OF 2-ARYLTHIOPHENES BY CATION EXCHANGE RESIN

2-Arylthiophenes coupled through the 4,5'-positions of the two thiophene rings by the action of cation exchange resin to afford unsymmetrical 5,5'-diaryl-2,3'-bithienyls as principal products.