203568-52-9Relevant academic research and scientific papers
4,5-Bis(diphenylphosphino)acridine: A new type of tridentate phosporus-nitrogen-phosphorus ligands
Hillebrand, Stefan,Bartkowska, Beata,Bruckmann, Joachim,Krueger, Carl,Haenel, Matthias W.
, p. 813 - 816 (1998)
Reaction of 4,5-difluoroacridine (8) with two equivalents of potassium diphenylphosphide (Ph2PK) yielded the title compound 3. Contrarily, diphenylphosphine (Ph2PH) reacted with 8 under addition, and 4,5-difluoro-9-diphenyl-9,10-dihydroacridine (12) was obtained. Compound 8 was prepared from 2-amino-3-fluorobenzoic acid (13) in a four step synthesis. As it is shown by the preparation of the metal complexes 4,5-bis(diphenylphosphino)-acridine-palladium dichloride (16) and 4,5-bis(diphenylphosphino)acridine-molybdenum tricarbonyl (17), compound 3 is capable of acting as a tridentate PNP ligand which coordinates transition metals in an approximately 'T-shaped' planar coordination geometry. Single crystal X-ray structure analyses we reported for 3 and 17.
Iron pincer complex catalyzed, environmentally benign, E-selective semi-hydrogenation of alkynes
Srimani, Dipankar,Diskin-Posner, Yael,Ben-David, Yehoshoa,Milstein, David
supporting information, p. 14131 - 14134 (2014/01/06)
Ironing out hydrogenation: For the first time, an iron catalyst provided chemo- and stereo-selective semi-hydrogenation of alkynes to E-alkenes. This efficient, atom-economical reaction is catalyzed by a novel acridine-based PNP iron pincer catalyst and exhibits excellent functional group tolerance under mild, neutral, environmentally benign reaction conditions. Copyright
