Synthesis 2025; 57(02): 417-424
DOI: 10.1055/a-2380-9676
paper
Special Topic Dedicated to Prof. H. Ila

An Acid-Mediated Multicomponent Domino Reaction for the Synthesis of N-Substituted Isoindolinones

Sudheer Kumar Karu
a   Polymers & Functional Materials Dept., CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
b   Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
,
Meghanath Veludandi
a   Polymers & Functional Materials Dept., CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
,
Chandrasekharam Malapaka
a   Polymers & Functional Materials Dept., CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
b   Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
› Author Affiliations
S.K.K. thanks the Council of Scientific & Industrial Research (CSIR), New Delhi for a senior research fellowship (SRF).


This article is dedicated to Prof. H. Ila, JNCASR, Bengaluru on the occasion of her 80th birthday. CSIR-IICT Communication no. IICT/Pubs./2024/205.

Abstract

A one-pot multicomponent reaction of 2-carboxybenzaldehyde, nitriles/anilines and a nucleophile (N,N-disubstituted anilines) for the synthesis of a range of functionalized N-substituted isoindolinone derivatives is described. This metal-free intramolecular cyclization reaction furnishes the desired products in good to excellent yields. The process is environmentally friendly and offers a sustainable method for synthesizing a diverse library of N-substituted isoindolinone derivatives under acidic conditions. This cascade reaction triggers the formation of a C–C and two C–N bonds involving carbonyl and carboxyl groups in the presence of nitriles/anilines. Additionally, in the absence of a nitrogen source, 3-substituted isobenzofuran-1(3H)-ones are synthesized.

Supporting Information



Publication History

Received: 13 June 2024

Accepted after revision: 06 August 2024

Accepted Manuscript online:
06 August 2024

Article published online:
19 September 2024

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