Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 18531-94-7, molcular formula is C20H14O2, introducing its new discovery. SDS of cas: 18531-94-7
A chiral amino alcohol based ligand was found to promote the highly enantioselective addition of terminal conjugated diynes to aromatic and aliphatic aldehydes. The combination of easily available C2-symmetric (R)- and (S)-BINOL with Ti(OiPr)4, Zn powder, and EtI was also found to catalyze the asymmetric addition of 1,3-diynes to aldehydes under mild reaction conditions, and thus, both enantiomers of the chiral conjugated diynols could be prepared with high enantioselectivities. The resulting optically active conjugated diynols were found to have potential anticancer activities with significant differences against HepG2 and HeLa cancer cells, and remarkable enantioselective cytotoxicity was observed for the first time.
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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI