4.6 Article

A Solvent-Free, One-Step, One-Pot Gewald Reaction for Alkyl-aryl Ketones via Mechanochemistry

Journal

APPLIED SCIENCES-BASEL
Volume 4, Issue 2, Pages 171-179

Publisher

MDPI
DOI: 10.3390/app4020171

Keywords

Gewald; solvent-free; ball milling; green chemistry; multicomponent reaction

Funding

  1. National Science Foundation [CHE-0548150]
  2. URC at the University of Cincinnati
  3. Division Of Chemistry
  4. Direct For Mathematical & Physical Scien [1058627] Funding Source: National Science Foundation

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Herein, we report on the solvent-free synthesis of 2-aminothiophenes via the Gewald reaction. Utilizing high speed ball milling conditions, we discovered the Gewald reaction can be catalytic in base, and conducted under aerobic conditions. Using thermal heat in tandem with the mixer/mill significantly increases the rate of reaction.

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