1207629-92-2Relevant academic research and scientific papers
Apparent alkyl transfer and phenazine formation via an aryne intermediate
Panagopoulos, Andria M.,Steinman, Doug,Goncharenko, Alexandra,Geary, Kyle,Schleisman, Carlene,Spaargaren, Elizabeth,Zeller, Matthias,Becker, Daniel P.
, p. 3532 - 3540 (2013/06/04)
Treatment of chlorotriaryl derivatives 3a and 3d or fluorotriaryl derivatives 3b and 3e with potassium diisopropylamide afforded alkyl-shifted phenazine derivatives 5a/5b, rather than the expected 9-membered triazaorthocyclophane 2a. The phenazine derivatives were isolated in 78-98% yield depending on the halogen and alkyl group present. In the absence of the halogen (chloro or fluoro), the apparent alkyl shift proceeds more slowly and cannot proceed via the intermediacy of the aryne intermediate. Mechanistic possibilities include intramolecular nucleophilic attack on an aryne intermediate leading to a zwitterionic intermediate and alkyl transfer via a 5-endo-tet process, or via a Smiles rearrangement.
Synthesis of an ortho-triazacyclophane: N, N ′, N ″-trimethyltribenzo-1,4,7-triazacyclononatriene
Panagopoulos, Andria M.,Zeller, Matthias,Becker, Daniel P.
experimental part, p. 7887 - 7892 (2011/02/25)
N,N′,N″-Trimethyltribenzo-1,4,7-triazacyclononatriene has been synthesized via sequential palladium-catalyzed Buchwald-Hartwig N-arylation reactions affording the 9-membered triaza o-cyclophane in 35% overall yield. An X-ray crystal structure shows the ne
