I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More

Comment Processing & Handling

New catalysts for Baeyer-Villiger oxidation reactions

By Tetsuo Satoh |

Kazuaki Ishihara and his group at Nagoya University (Japan; www.ishihara-lab.net) have established a new, environment friendly reaction technology — using Baeyer-Villiger oxidations — for selectively oxidizing ketones into esters. The reaction uses hydrogen peroxide as the oxidant, and has potential as a safer alternative to the conventional industrial route for making the nylon precursor epsilon-caprolactam from epsilon-caprolactone. Instead of H2O2, industrial routes have used acetyl hydroperoxide for making epsilon-caprolactam, which required very careful handling of explosive acetyl hydroperoxide, and also purification steps for removing byproducts and the corrosive, smelly residual catalyst after the reaction. The new route uses hydrogen peroxide with an effective oxidation-acceleration catalyst system, both of which are easier to handle, and no byproducts are produced. The researchers found that two environmentally friendly catalysts — lithium tetrakis(pentafluorophenyl)borate or Li[B(C6F5)4], and calcium tetrakis(pentafluorophenyl) or Ca[B(C6F5)4] — can be used in both hydrophilic systems with H2O2 as the oxidant, and in lipophilic systems, including those with ketone substrates and ester products. These…
Related Content

ABB

The Big 6 level measurement technologies: Where to use them and why

WHITE PAPER — The Big 6 level measurement technologies: Where to use them and why Anyone who’s ever worn a tool belt knows that sometimes you have to use a tool for something it’s not designed to do. If you don’t happen to have a hammer, a heavy…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Securing the availability of chemical processes through a long-term partnership
Metering gas in biogas plants
The Big 6 level measurement technologies: Where to use them and why
Minimizing particle breakage and mother liquor residue in technical salts production
Expectations are shifting: How measurement solutions can help overcome chemical industry challenges

View More