Synthesis of furan-2-ones and spiro[furan-2,3ʹ-indoline] derivatives using polyether sulfone sulfamic acid catalysis

Abstract Polyether sulfone sulfamic acid (PES-NHSO3H) was prepared by simple sulfonation of a modified polyether sulfone. The number of acidic sites (SO3H) was determined to be 4.23 mmol H+/g by acid-base titration and 4.29 mmol H+/g by barium sulfate test. PES-NHSO3H was used as an efficient acidic...

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Bibliographic Details

Published in:	Scientific Reports
Main Authors:	Seyed-Mola Khatami, Mehdi Khalaj, Maryam Zarandi, Taha Zeynali, Ashraf S. Shahvelayati
Format:	Article
Language:	English
Published:	Nature Portfolio 2024-10-01
Subjects:	2ʹ,5-Dioxo-5H-spiro[furan-2,3ʹ-indoline]-3-carboxylate derivatives Furan-2-ones Butenolides Spiro compounds Polyether sulfone sulfamic acid
Online Access:	https://doi.org/10.1038/s41598-024-76707-0