85337-31-1Relevant academic research and scientific papers
Twin Annulation of Naphthalene via a 1,5-Naphthodiyne Synthon. New Syntheses of Chrysene and Dibenzochrysene
LeHoullier, Craig S.,Gribble, Gordon W.
, p. 1682 - 1685 (1983)
New, efficient syntheses of chrysene (1), dibenzochrysene (16), and derivatives are described that feature, as the key step, the formal cycloaddition between 1,5-naphthodiyne (3) and a heterocyclic diene (furan, pyrroles, isoindoles).Subsequent manipulation affords the arene in 26-49percent overall yield from commercially available 2,6-dibromo-1,5-dihydroxynaphthalene (5).The latter is easily converted to ditosylate 6, which, with phenyllithium, serves as a synthon for 3.
Synthesis of tricyclic and tetracyclic sultones by Pd-catalyzed intramolecular cyclization
Majumdar,Mondal, Shovan,Ghosh, Debankan
scheme or table, p. 4781 - 4784 (2011/03/18)
A new efficient synthesis of aromatic six-membered ring sultones by the implementation of ligand-free Pd-catalyzed intramolecular cyclization of aromatic sulfonates derived from various bromo phenols and naphthols is described.
