Experiment and Theory of Bimetallic Pd-Catalyzed α-Arylation and Annulation for Naphthalene Synthesis
作者:Chloe C. Ence、Erin E. Martinez、Samuel R. Himes、S. Hadi Nazari、Mariur Rodriguez Moreno、Manase F. Matu、Samantha G. Larsen、Kyle J. Gassaway、Gabriel A. Valdivia-Berroeta、Stacey J. Smith、Daniel H. Ess、David J. Michaelis
DOI:10.1021/acscatal.1c02731
日期:2021.8.20
We report the synthesis of bimetallic Pd(I) and Pd(II) complexes with bidentate 2-phosphinoimidazole ligands and their catalytic activity to generate substituted naphthalenes. This process involves the coupling of an aryl iodide and 2 equiv of a ketone via sequential ketone α-arylation and then annulation to generate disubstituted and tetrasubstituted naphthalenes in a regioselective manner. Excellent
Radical Addition/Cyclization Reaction of 2-Vinylanilines with Alkynes: Synthesis of Naphthalenes via Electron Catalysis
作者:Xia Cao、Bao-Gui Cai、Guo-Yong Xu、Jun Xuan
DOI:10.1002/asia.201801496
日期:2018.12.18
A cascaderadicaladdition/cyclization reaction of 2‐vinylanilines with alkynes for the synthesis of biologically important naphthalene derivatives is reported. In this transformation, the in‐situ‐formed diazonium salts from 2‐vinylanilines served as efficient aryl radical precursors and the reaction was run under metal‐free conditions.
Tandem Synthesis of 1,3-Disubstituted Naphthalenes via TfOH-Promoted Directed-Aldol and Friedel–Crafts Reactions
作者:Hongchen Li、Lidong Shan、Lin Min、Yunxiang Weng、Xinyan Wang、Yuefei Hu
DOI:10.1021/acs.joc.1c01713
日期:2021.11.5
A TfOH-promoted tandemsynthesis of 1,3-disubstituted naphthalenes is developed via a directed-aldol reaction and a Friedel–Crafts reaction. Two new C–C bonds and one new benzene ring are created efficiently in one pot due to the discovery of a TfOH-promoted highly chemoselective directed-aldol reaction between two different ketones with α-hydrogens.
Benzotriazole-Assisted Aromatic Ring Annulation: Efficient and General Syntheses of Polysubstituted Naphthalenes and Phenanthrenes
作者:Alan R. Katritzky、Guifen Zhang、Linghong Xie
DOI:10.1021/jo961597x
日期:1997.2.1
4-addition to alpha,beta-unsaturated aldehydes and ketones. Intramolecular cyclization of the products, induced by acetic acid-hydrobromic acid or polyphosphoric acid (PPA), followed by simultaneous dehydration and debenzotriazolylation furnishes a wide range of polysubstituted naphthalenes 7a-f and of phenanthrenes 9 and 11 in moderate to good yields in one-pot procedures. If compounds 1 are first lithiated