Absorption Spectra. IV. Ketazines¹

Chemoselectivity of the Reactions of Diazomethanes with 5‐Benzylidene‐3‐phenylrhodanine

“…Because the 13 C-NMR data of our compound did not correspond to those described in the literature [28], we synthesized 10 independently from benzophenone and NH 2 NH 2 · H 2 O in EtOH at 1608 according to [29] and from 7c according to the procedure described in [27b]. The 13 C-NMR data given in [28] correspond to those of benzophenone.…”

Unsymmetrical and symmetrical azines toward application in organic photovoltaic

“…The compounds structurally similar to the ones reported in this paper have already been described in literature [19][20][21][22][23]. However, their electrochemical and photovoltaic properties have not been investigated and described.…”

“…However, their electrochemical and photovoltaic properties have not been investigated and described. The synthesis of azine in our work denoted as BBA (obtained from benzophenone hydrazone and benzaldehyde) was first described by Curtius in 1891 [20] and its absorption properties in ethanol solution was reported in 1946 [21]. The new solvent-free reaction of benzophenone hydrazone with benzophenone using sulfated titania as catalytic system was also recently described by the Swaminathan group [4a].…”

Relationships between Absorption Spectra and Spectra and Chemical Constitution of Organic Molecules.

“…Insulated resonating systems or insulated chromophores will have disjoined electronic oscillations, giving rise to excited states of different energies and, hence, separate absorption bands. Such bands from localized oscillations have been called partíais (27,182,214,215). This is somewhat related to the section above wherein the insulation of chromophores was discussed.…”