171070-83-0

Upstream product

• 693-02-7 hex-1-yne 
• 189008-33-1 2-[2-(4-methylphenyl)ethynyl]benzaldehyde 
• 6630-33-7 ortho-bromobenzaldehyde 
• 766-97-2 4-n-methylphenylacetylene 
• 38846-64-9 2-ethynylbenzaldehyde 

Downstream Products

• 182920-37-2 C₃₄H₃₁OP 

Relevant academic research and scientific papers

Access toward Fluorenone Derivatives through Solvent-Free Ruthenium Trichloride Mediated [2 + 2 + 2] Cycloadditions

An efficient and practical route for the preparation of highly substituted fluorenones and analogues via solvent-free ruthenium trichloride mediated [2 + 2 + 2] cycloaddition of α,-diynes and alkynes has been developed. This green chemistry approach involves a solventless and atom-economical catalytic process to generate densely functionalized fluorenones and related derivatives of high synthetic utility.

A surprising switch from the Myers-Saito cyclization to a novel biradical cyclization in enyne-allenes: Formal diels-alder and ene reactions with high synthetic potential

If there is an aryl substituent on the acetylene terminus of enyne allenes, then its reaction mode may be changed from the Myers-Saito cyclization to a novel C2-C6 cyclization resulting in a net intramolecular Diels-Alder or ene reaction. As a consequence, the thermal cyclization of readily accessible acyclic enyne allenes can be utilized for the synthesis of complex benzofulvene and benzofluorene derivatives. Kinetic results of the C2-C6 cyclization reaction indicate a two-step reaction pathway with a benzofulvene biradical intermediate.