61272-76-2Relevant articles and documents
Au(I)-Catalyzed 6-endo-dig Cyclizations of Aromatic 1,5-Enynes to 2-(Naphthalen-2-yl)anilines Leading to Divergent Syntheses of Benzo[α]carbazole, Benzo[c,h]cinnoline and Dibenzo[i]phenanthridine Derivatives
Fu, Jiayue,Li, Bingbing,Wang, Xiugui,Liang, Qida,Peng, Xiaoshi,Yang, Lu,Wan, Tao,Wang, Xinxiu,Lin, Bin,Cheng, Maosheng,Liu, Yongxiang
supporting information, p. 46 - 52 (2021/11/20)
A gold(I)-catalyzed 6-endo-dig cyclization of aromatic 1,5-enynes was developed to synthesize 2-(naphthalen-2-yl)anilines. The functional group tolerance of this cyclization was examined systematically and a possible mechanism was proposed. The derivatization of 2-(naphthalen-2-yl)aniline was carried out to facile access to benzo[α]carbazole, benzo[c,h]cinnoline and dibenzo[i]phenanthridine derivatives in a divergent way.
A Diastereoselective Route to Benzoannelated Bridged Sultams
Klochkova, Anastasiia A.,Rassadin, Valentin A.,Sokolov, Victor V.
supporting information, p. 4484 - 4494 (2021/08/13)
A practical diastereoselective method for the synthesis of benzoannelated tri- and tetracyclic bridged sultams has been developed. The synthetic route employs widely available, substituted -iodoanilines and is based on intramolecular Michael addition followed by cycloalkylation with dihaloalkanes, or vice versa. The target compounds were isolated in good yields and the diastereoselectivity of the reaction could be easily controlled by the order of Michael addition and cycloalkylation steps.
Cu(II)-Promoted Cascade Synthesis of Fused Imidazo-Pyridine-Carbonitriles
Rakshit, Amitava,Dhara, Hirendra Nath,Alam, Tipu,Dahiya, Anjali,Patel, Bhisma K.
supporting information, p. 17504 - 17510 (2021/11/18)
A Cu(II)-promoted synthesis of an aza-fused N-heterocycle having a benz-imidazopyridine scaffold is developed via an addition-cyclization reaction followed by an Ullmann-type C-N coupling between o-iodoanilines and γ-ketodinitriles. This protocol features a broad substrate scope, giving products in 32-84% yields. The compounds show excellent photoluminescence properties having two absorption maxima in the region between 270-280 and 338-350 nm and emission maxima in the range of 502-533 nm. The HOMO-LUMO energy gap of 3.49-3.57 eV was determined using Gaussian 09 at the B3LYP/6-31G (d, p) basis set level. We also demonstrated a few postsynthetic modifications.