3158-85-8Relevant articles and documents
Oxidative Synthesis of Quinazolinones under Metal-free Conditions
Feng, Jian-Bo,Wu, Xiao-Feng
, p. 794 - 798 (2017)
A metal-free procedure for the synthesis of quinazolinones under oxidative conditions has been developed. In the presence of DABCO and TBHP, the desired products can be obtained in moderate yields with 2-fluorobenzaldehydes and 2-aminopyridines as the substrates.
One-pot synthesis of substituted dibenzoxazepinones and pyridobenzoxazepinones using octacarbonyldicobalt as an effective CO source
Anchan, Kavitha,Baburajan, Poongavanam,Puttappa, Nagaswarupa H.,Kumar Sarkar, Sujit
supporting information, p. 348 - 360 (2019/12/03)
A facile one-pot protocol for the synthesis of substituted dibenzoxazepinones and pyridobenzoxazepinones from commercially available aryl/heteroaryl halides and amino phenols using octacarbonyldicobalt (Co2(CO)8) as an effective metal carbonyl source has been demonstrated. This method proceeds via the sequential coupling of aryl/heteroaryl halides with aminophenol by amidation and intramolecular cyclization to give dibenzoxazepinones/pyridobenzoxazepinones.
Design of Conjugated Molecules Presenting Short-Wavelength Luminescence by Utilizing Heavier Atoms of the Same Element Group
Yamaguchi, Madoka,Tanaka, Kazuo,Chujo, Yoshiki
, p. 1342 - 1347 (2018/04/30)
The introduction of heavy atoms into conjugated molecules often induces a redshift in the emission spectra. Conversely, we report here a blueshifting effect in the absorption and emission bands of a conjugated organic dye by employing a heavier atom from the same element group. Boron complexes having oxygen- and sulfur-bridged structures in the ligand moiety were synthesized, and their optical properties were compared. Significant optical bands in the absorption and luminescence spectra of the sulfur-bridged complex were observed in a shorter wavelength region than those of the oxygen-bridged complex. Theoretical calculations suggest that replacement of the bridging atom by a heavier one should reduce molecular planarity because of the larger atom size. As a result, the degree of electronic conjugation decreases, and this is followed by a blueshift in the optical bands. Finally, a blue-emissive crystal is demonstrated.
