Batch versus flow photochemistry: a revealing comparison of yield and productivity

Elliott, Luke D, Knowles, Jonathan P, Koovits, Paul J, Maskill, Katie G, Ralph, Michael J, Lejeune, Guillaume, Edwards, Lee J, Robinson, Richard I, Clemens, Ian R, Cox, Brian, Pascoe, David D, Koch, Guido, Eberle, Martin, Berry, Malcolm B and Booker-Milburn, Kevin I (2014) Batch versus flow photochemistry: a revealing comparison of yield and productivity. Chemistry - A European Journal, 20 (46). pp. 15226-15232. ISSN 0947-6539

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Abstract

The use of flow photochemistry and its apparent superiority over batch has been reported by a number of groups in recent years. To rigorously determine whether flow does indeed have an advantage over batch, a broad range of synthetic photochemical transformations were optimized in both reactor modes and their yields and productivities compared. Surprisingly, yields were essentially identical in all comparative cases. Even more revealing was the observation that the productivity of flow reactors varied very little to that of their batch counterparts when the key reaction parameters were matched. Those with a single layer of fluorinated ethylene propylene (FEP) had an average productivity 20% lower than that of batch, whereas three-layer reactors were 20% more productive. Finally, the utility of flow chemistry was demonstrated in the scale-up of the ringopening reaction of a potentially explosive [1.1.1] propellane with butane-2,3-dione.

Item Type: Article
Keywords: 1,2-dications, Lewis acids, nortricyclane, phosphorus, polycations, Arsenic, Catalysis, Coordination Complexes, Lewis Acids, Mesylates, Molecular Structure, Phosphorus, Polyamines, Stereoisomerism
Schools and Departments: School of Life Sciences > Chemistry
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 18 Dec 2020 11:53
Last Modified: 09 Mar 2021 11:50
URI: http://sro.sussex.ac.uk/id/eprint/95747

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