Controlled generation and use of CO in flow†‡
Steffen V. F. Hansen a,b, Zoe E. Wilson a, Trond Ulven *b, Steven V. Ley *a
- a Department of Chemistry, University of Cambridge Lensfield Road, Cambridge, CB2 1EW, UK
- b Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, DenmarkRead the publication that featured this abstract
A method for the generation and use of carbon monoxide in flow chemistry has been developed. By using a tube-in-tube reactor, oxalyl chloride can be conveniently and safely hydrolyzed using a NaOH solution to generate CO in the outer stream, which then passes through AF-2400 semi-permeable inner tubing to enrich a reaction stream where it is consumed. The tube-in-tube reactor allows the generation of CO under conditions which would otherwise be incompatible with the reaction conditions. In this way carbonylations can be successfully performed in flow without the use of pressurized gas cylinders. Both alkoxy- and aminocarbonylation was carried out in flow, including a 320 minute continuous run, as proof of concept.
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