7111-67-3Relevant articles and documents
Regioselective annulation of unsymmetrical 1,2-phenylenebis(diaryl/diheteroarylmethanol): A facile synthesis of anthracene, tetracene, and naphtho[b]thiophene analogues
Sivasakthikumaran, Ramakrishnan,Rafiq, Settu Muhammad,Sankar, Elumalai,Clement, J. Arul,Mohanakrishnan, Arasambattu K.
, p. 7816 - 7835 (2015/12/31)
A systematic study on the regioselective cyclization of benzene- and naphthalene-based unsymmetrical diols with HBr (33 %) in acetic acid at room temperature led to the formation of annulation products. By using this method, synthesis of a wide variety of anthracene, tetracene and naphtho[b]thiophene analogues was achieved in good to excellent yields. By employing HBr (33 %) in acetic acid as a catalyst for regioselective cyclization of unsymmetrical diols was very facile and devoid of commonly encountered dihydroisobenzofuran formation. Regioselective cyclization of benzene- and naphthalene-based unsymmetrical diols with HBr (33 %) in acetic acid at room temperature led to the formation of annulated arenes and heteroarenes in good to excellent yields.
Improved synthesis of aryl-substituted anthracenes and heteroacenes
Li, Guijie,Zhou, Shaolin,Su, Guowei,Liu, Yuanhong,Wang, Peng George
, p. 9830 - 9833 (2008/03/28)
(Chemical Equation Presented) A Bronsted acid-catalyzed highly efficient construction of substituted arylanthracenes and heteroacenes is described, which is assumed to be initiated through the facile formation of a benzylic cation intermediate. This method offers several advantages in comparison with known aromatic cyclodehydration reactions such as high selectivities, mild reaction conditions, and easily accessible starting materials.
