Continuous processing and efficient in situ reaction monitoring of a hypervalent iodine (III) mediated cyclopropanation using benchtop NMR spectroscopy

• Batool Ahmed-Omer^a
• Eric Sliwinski^a
• John Paul Cerroti^b
• Steven V Ley^a

• ^aDepartment of chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
• ^bMagritek GmbH, Gebäude VO (Building VO), Triwo Technopark Aachen, Philipsstrasse 8, 52068 Aachen, Germany

Real-time NMR spectroscopy has proven to be a rapid and an effective monitoring tool to study the hypervalent iodine (III) mediated cyclopropanation. With the ever increasing number of new synthetic methods for carbon-carbon bond formation, the NMR in situ monitoring of reactions is becoming a highly desirable enabling method. In this study, we have demonstrated the versatility of benchtop NMR using inline and online real-time monitoring methods to access mutually complementary information for process understanding, and developed new approaches for real-time monitoring addressing challenges associated with better integration into continuous processes.

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