76331-32-3Relevant academic research and scientific papers
Facile multistep synthesis of isotruxene and isotruxenone
Yang, Jye-Shane,Huang, Hsin-Hau,Lin, Shih-Hsun
supporting information; experimental part, p. 3974 - 3977 (2009/10/14)
(Chemical Equation Presented) Three multistep approaches toward facile syntheses of isotruxene (1) and isotruxenone (3) are reported. The ortho-para conjugated backbone in the precursor 4 was constructed by either Co-catalyzed [2 + 2 + 2] cyclotrimerization or the [4 + 2] Diels-Alder reactions. The regioselectivity of the triple intramolecular Friedel-Crafts acylation of 4 plays the key role in determining the overall yield. Compared to the previous one-step method, the current approaches are more efficient in terms of product yield (27-36% vs 4-18%) and purification (i.e., free of column chromatography).
Polycyclic Aromatic Compounds : Part I - A New Synthesis of Fluorenone Fluorene Derivatives
Bandyopadhyay, T. K.,Bhattacharya, A. J.
, p. 439 - 442 (2007/10/02)
A series of hitherto unknown highly substituted fluorenone and fluorene derivatives has been synthesised.The synthesis involves Diels-Alder cycloaddition reaction of cyclopentadienones with ethyl esters of phenyl- and p-methylphenylpropiolic acids.The add
