Selective Oxidative Carbonylation of Aniline to Diphenylurea with Ionic Liquids

Nanette Zahrtmann, Carmen Claver, Cyril Godard, Anders Riisager*, Eduardo José Garcia Suárez

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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A catalytic system for the selective oxidative carbonylation of aniline to diphenylurea based on Pd complexes in combination with imidazolium ionic liquids is presented. Both oxidants, Pd complexes and ionic liquids affect the activity of the reaction while the choice of oxidant determines the selectivity of the reaction. Together they allows the reaction to proceed under comparatively mild conditions without loss of activity. In-situ NMR examination of the reaction led to the observation of a previously suggested intermediate supporting the proposed mechanism.
Original languageEnglish
Pages (from-to)2450-2457
Publication statusPublished - 2018


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