A series of dialkoxybenzo[j]fluoranthene derivatives were readily and efficiently synthesized in gram scale starting from the commercial 6- or 7-methoxy-1-tetralone. The crystal structures of the BjF derivatives were described, and their structure–optical properties in solution and in the solid state were investigated. Moreover, this kind of organic material also exhibited excellent optical waveguide
Synthesis and Structures of Multifunctionalized Helicenes and Dehydrohelicenes: An Efficient Route to Construct Cyan Fluorescent Molecules
作者:Jun‐Dao Chen、Hai‐Yan Lu、Chuan‐Feng Chen
DOI:10.1002/chem.201001655
日期:2010.10.18
Spiral up! A series of multifunctionalized benzo[5]helicene derivatives and a benzo[7]helicene were conveniently synthesized. Moreover, the oxidative cyclodehydrogenation of the benzo[5]helicenes by DDQ in trifluoroacetic acid or trifluoromethanesulfonic acid quantitatively provided the corresponding dehydro[5]helicene derivatives, which showed the cyanfluorescent properties (shown here).
Synthesis of benzo[b]naphtho[2,1-j]fluoranthene, benzo[a]naphtho[2,3-j]fluoranthene and other related benzo[j]fluoranthene derivatives
作者:Malcolm Crawford、V. R. Supanekar
DOI:10.1039/j39700001832
日期:——
With palladiumsulphide on barium carbonate as catalyst for dehydrogenation and cycloisomerisationbenzo[b]-naphtho[2,1-j]fluoranthene, benzo[a]naphtho[2,3-j]fluoranthene, and certain derivatives of benzo[j]fluoranthene have been synthesised. Sulphuric acid has been found useful for cycloisomerisation without dehydrogenation. The structure of the compound previously claimed to be benzo[a]naphtho[2
用碳酸钡硫化钯作为催化剂用于脱氢和cycloisomerisation苯并[ b ]萘并[2,1- Ĵ ]荧蒽,苯并[一个]萘并[2,3- Ĵ ]荧蒽和苯并的某些衍生物[ Ĵ ]荧蒽已经合成。已发现硫酸可用于不脱氢的环异构化。修改了先前声称为苯并[ a ]萘并[2,1- j ]荧蒽的化合物的结构。