Regioselective acid-catalyzed cyclodimerization of 1,2-dihydronaphthalene. Mechanism of formation and single-crystal x-ray analysis of two octahydrobenzo[j]fluoranthenes

Pd-Catalyzed Tandem Reaction of 2-Aminostyryl Nitriles with Arylboronic Acids: Synthesis of 2-Arylquinolines

“…3,5-Dimethyl phenylboronic acid afforded the desired 3e in comparable 84% yield, while bulky 2,6-dimethyl phenylboronic acid was unsuitable in this transformation (Table , entries 4–5). Interestingly, arylboronic acids bearing methoxy substituents at 4-positions provided the corresponding product 3g in lower yield compared to other moieties bearing electron-donating groups, affording a significant amount of byproduct such as 2-amino quinoline and 4,4′-dimethoxy-1,1′-biphenyl. Functional groups, such as naphthyl and biphenyl, were also tolerated with observed yields ranging from 69 to 85% (Table , entries 7–9).…”

Polar−π and Cation−π Stabilizing Interactions between Constrained Cofacial Aromatic Rings Favoring the More Sterically Hindered Diastereomer

“…Found: C, 78.44; H, 7.72. 1,2‘-Binaphthyl (27.7 mg, 0.11 mmol, 37%) mp 74−76 °C (lit . mp 79−81 °C) was also obtained as a side product by washing the column with the same eluent.…”

A mild method for eliminating alkyl ethers to alkenes

“…Due to the fact that the two substrates, 5a and 5b, led to exactly the same product, the reactions proceed in all likelihood via intermediary occurring 1,2-dihydronaphthalene, subsequently dimerises under the reaction conditions to the binaphthalene 6, as already reported. [14][15][16] Thus, the elimination reaction primarily gave the desired elimination product in acceptable yields.…”