Isoindolenine als Zwischenprodukte der Phthalocyanin‐Synthese

Abstract

Es werden Verfahren zur Herstellung von metallfreien und metallhaltigen lsoindoleninen und deren Kondensationsprodukte beschrieben. Hohermolekulare Kupfer-, Nickel-oder Kobalt-lsoindolenine lassen sich leicht in die entsprechenden Phthalocyanine uberfuhren. Die Farbstoffbildung vollzieht sich unter so milden Bedingungen, daR m i t den lsoindoleninen die Erzeugung von Phthalocyaninen acf der Faser moglich ist, wobei man auch von den monomolekularen Verbindungen ausgehen kann. Als ,,Phtalogene" (W.Z.) haben die Farbenfabriken Bayer, Leverkusen, solche lsoindolenine bereits i m Handel.Geschich tliches Nomenklatur Monomolekulim Iso-indoleninr :

Synthesis, Spectral Characterisation and Crystal Structure of (1,24-Bicyclophthalocyaninato)bismuth(III)

“…Other authors have assigned this broad band as evidence for the existence of a free radical (Pc) ring, which is not inconsistent with the proposal of a charge-transfer transition. In the lithium phthalocyanine radical, Li(Pc), a doublet at 427 and 473 nm has been attributed to the free radical monophthalocyanine [31Ϫ33] while a similar broad band centred at approximately 450Ϫ470 nm has also been attributed to a free-radical phthalocyanine ring in Ln(Pc) 2 [34Ϫ36] and in In(Pc) 2 . [37] It is difficult to use the interpretation of monophthalocyanine or diphthalocyanine spectra for the interpretation of the spectrum of the compound 1 because Bi(Pc)Cl and other phthalocyanine compounds have a C 4v or D 4h symmetry, while 1 has no symmetry element, the allowed transitions are different and the molecular orbitals should have different energies and a different electron-density distribution.…”

Synthesis and Properties of AABAAB-Type Macroheterocyclic Compounds with Fragments of 1,2,4- and 1,3,4-Thiadiazole

“…The synthesis was carried out following a literature procedure. [20] (4). Solution of 1-bromodecane (12.5 mL, 60.4 mmol) in CH 2 Cl 2 , 3 (2 g, 17.2 mmol) and МеОН (80 mL) was stirred with refluxing for 20 hours.…”

Synthesis and Photophysical, Electrochemical and Theoretical Study of Thi­azole‐Annelated Phthalocyanines

“…Two reaction pathways for the mechanism of cyclotetramerisation have been described. [15] After nucleophilic attack of the nHexO -anion on one of the nitrile carbon atoms, an alkoxyiminoisoindolenine intermediate is formed that reacts with a second benzothiazoledicarbonitrile to give a dimeric intermediate. Subsequent formation of a trimeric intermediate, which reacts further with the fourth dicarbonitrile or undergoes a selfcondensation process of the two dimers, yields the tetrameric intermediate.…”