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. 2023 Sep 6;29(50):e202301703.
doi: 10.1002/chem.202301703. Epub 2023 Jul 26.

Diverse Synthesis of 2H-Isoindole-Based Polycyclic Aromatic Compounds

Teru Kawazoe  1 , Hikaru Yanai  1 , Yuto Hagiyama  2 , Kazumasa Funabiki  2 , Takashi Matsumoto  1
Affiliations

Diverse Synthesis of 2H-Isoindole-Based Polycyclic Aromatic Compounds

Teru Kawazoe et al. Chemistry. .

Abstract

1,3-Disubstituted N-aryl-2H-isoindoles have been synthesized by a cascade reaction of divinyl ethers, which are derived from easily available 4-bromoisocoumarins, with substituted anilines in HFIP. This cascade reaction consists of a ring-opening step through addition-elimination mechanism and the following 5-exo-tet type ring-closing step via the intramolecular nucleophilic substitution reaction. Thus obtained 2H-isoindoles have been derivatized to high-order nitrogen-containing polycycles including less accessible benzo[a]ullazines.

Keywords: cascade reactions; heterocycles; photochemical properties; polycyclic aromatic compounds; ullazines.

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