87281-94-5Relevant articles and documents
Rhenium-catalyzed synthesis of 3-imino-1-isoindolinones by C-H bond activation: Application to the synthesis of polyimide derivatives
Sueki, Shunsuke,Guo, Yuanfang,Kanai, Motomu,Kuninobu, Yoichiro
supporting information, p. 11879 - 11883 (2013/11/19)
Polyimide solution: Synthesis of the title compounds from aromatic imidates and isocyanates in good to excellent yields by a rhenium-catalyzed C-H bond transformation is described. The reaction also proceeded in high yield on gram scale and could be applied to the synthesis of polyimide derivatives (see figure), which are highly soluble in organic solvents. Copyright
Syntheses and basicity of 4-(N,N-dimethylamino)-2-arylquinazolines
Zielinski, Wojciech,Kudelko, Agnieszka,Holt, Elizabeth M.
, p. 1201 - 1209 (2007/10/03)
The reaction of substituted N-phenylbenzimidoyl chlorides with N,N-dimethylcyanamide in the presence of titanium tetrachloride has yielded seven 4-(N,N-dimethylamino)-2-arylquinazolines substituted on the phenyl ring with electron donating or withdrawing groups. pKa values have been determined for these compounds and analyzed in conjunction with the Hammertt σ constants to observe the influence of these phenyl substituents upon the basicity of 4-(N,N-dimemylamino)-2-arylquinazolines. The σ value, single crystal X-ray analysis and 15N-nmr spectra give evidence about the preferential site of protonation in such systems.
