Formula: C14H9Cl. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 4-Chloro-4′-ethynyl-1,1′-biphenyl, is researched, Molecular C14H9Cl, CAS is 57399-11-8, about Copper-Catalyzed and Proton-Directed Selective Hydroxymethylation of Alkynes with CO2. Author is Wang, Mei-Yan; Jin, Xin; Wang, Xiaofei; Xia, Shumei; Wang, Yue; Huang, Shouying; Li, Ying; He, Liang-Nian; Ma, Xinbin.
An intriguing strategy for copper-catalyzed hydroxymethylation of alkynes with CO2 and hydrosilane was developed. Switched on/off a proton source, for example, t-BuOH, direct hydroxymethylation and reductive hydroxymethylation could be triggered selectively, delivering a series of allylic alcs. and homobenzylic alcs., resp., with high levels of Z/E, regio- and enantioselectivity. Such a selective synthesis is attributed to the differences in response of vinylcopper intermediate to proton and CO2. The protonation of vinylcopper species is demonstrated to be prior to hydroxymethylation, thus allowing a diversion from direct alkyne hydroxymethylation to reductive hydroxymethylation in the presence of a suitable proton source.
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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem