Continuous preparation and use of dibromoformaldoxime as a reactive intermediate for the synthesis of 3- bromoisoxazolines

We report the multistep continuous process for the preparation of dibromoformaldoxime (DBFO) as a precursor to generate bromoisoxazolines. We also report process improvements that afford a productivity of over 620 mmol h-1 of DBFO.

• Claudio Battilocchio^a*
• Francesco Bosica^a
• Sam M. Rowe^a
• Bruna L. Abreu^a
• Edouard Godineau^b*
• Matthias Lehmann^b
• Steven V. Ley^a

• ^a Innovative Technology Centre, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
• ^b Syngenta Crop Protection AG, Crop Protection Research, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland

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