Dual catalysis with magnetic chitosan: Direct synthesis of cyclic carbonates from olefins with carbon dioxide using isobutyraldehyde as the sacrificial reductant

Subodh Kumar, Nikita Singhal, Raj K. Singh, Piyush Gupta, Raghuvir Singh, Suman L. Jain

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

Chitosan coated magnetic nanoparticles were synthesized and used as a support for the immobilization of the cobalt(ii) acetylacetonate complex [Co(acac)2] and quaternary triphenylphosphonium bromide [P+Ph3Br-] targeting -NH2 and -OH moieties located on the surface of chitosan. The synthesized material was used as a catalyst for one pot direct synthesis of cyclic carbonates from olefins via an oxidative carboxylation approach with carbon dioxide using isobutyraldehyde as the sacrificial reductant and molecular oxygen as the oxidant. After the reaction, the catalyst was recovered by applying an external magnet and reused for several runs without significant loss in catalytic activity and no leaching was observed during this course.

Original languageEnglish
Pages (from-to)11860-11866
Number of pages7
JournalDalton Transactions
Volume44
Issue number26
DOIs
StatePublished - 14 Jul 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2015.

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