Development of safe and scalable continuous-flow methods for palladium-catalyzed aerobic oxidation reactions

Xuan Ye, Martin D. Johnson, Tianning Diao, Matthew H. Yates, Shannon S. Stahl

Research output: Contribution to journalArticlepeer-review

Abstract

The synthetic scope and utility of Pd-catalyzed aerobic oxidation reactions has advanced significantly over the past decade, and these reactions have the potential to address important green-chemistry challenges in the pharmaceutical industry. This potential has not been realized, however, because safety concerns and process constraints hinder large-scale applications of this chemistry. These limitations are addressed by the development of a continuous-flow tube reactor, which has been demonstrated on several scales in the aerobic oxidation of alcohols. Use of a dilute oxygen gas source (8% O2 in N2) ensures that the oxygen/organic mixture never enters the explosive regime, and efficient gas-liquid mixing in the reactor minimizes decomposition of the homogeneous catalyst into inactive Pd metal. These results provide the basis for large-scale implementation of palladium-catalyzed (and other) aerobic oxidation reactions for pharmaceutical synthesis.

Original languageEnglish (US)
Pages (from-to)1180-1186
Number of pages7
JournalGreen Chemistry
Volume12
Issue number7
DOIs
StatePublished - Jul 1 2010

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution

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