35324-43-7

Upstream product

• 35324-46-0 o,o’-diiodo-diphenylacetylene 
• 536-74-3 phenylacetylene 
• 38399-13-2 2,2'-dibromotolane 
• 100-52-7 benzaldehyde 
• 226089-82-3 C₂₉H₂₀O₂S 

Downstream Products

• 35324-44-8 3,3,3',3'-Tetrabromo-2,2'-diphenyl-3H,3'H-[1,1']biindenyl 
• 1048972-07-1 1-phenyl-1,6-dihydrobenzo[a]indeno[2,1-c]fluorene 
• 35324-45-9 1,1'-dioxo-2,2'-diphenyl-3,3'-biindenyl 

Relevant academic research and scientific papers

Radical cascade transformations of tris(o-aryleneethynylenes) into substituted benzo[a]indeno[2,1-c]fluorenes

Oligomeric o-aryleneethynylenes with three triple bonds undergo cascade radical transformations in reaction with a Bu3SnH/AIBN system. These cascades involve three consecutive cycle closures with the formation of substituted benzo[a]indeno[2,1-c]fluorene or benzo[1,2]fluoreno[4,3-b]silole derivatives. The success of this sequence depends on regioselectivity of the initial attack of the Bu3Sn radical at the central triple bond of the o-aryleneethynylene moiety. The cascade is propagated through the sequence of 5-exo-dig and 6-exo-dig cyclizations which is followed by either a radical attack at the terminal Ar substituent or radical transposition which involves H-abstraction from the terminal TMS group and 5-endo-trig cyclization. Overall, the transformation has potential to be developed into an approach to a new type of graphite ribbons.

Integrated chemical process. Convergent strategy for ortho-phenylene ethynylene skeleton by one-pot double elimination method

Convergent strategies for ortho-phenylene ethynylene skeletons are realized on the basis of one-pot double elimination method. This protocol overcomes unavoidable difficulties encountered in Sonogashira coupling.