Journal of the Chemical Society. Perkin Transactions 2 (2001) p. 2245 - 2246 (1996)
Update date:2022-08-11
Topics:
Baxter, Nicholas J.
Laws, Andrew P.
Rigoreau, Laurent
Page, Michael I.
N-Methyl β-sultam undergoes acid- and base-catalysed hydrolysis in water at 30 °C and I = 1.0 mol dm-3 with kH+ = 2.79dm3 mol-1s-1 and KOH = 1.38 × 10-2 dm3 mol-1 s-1. These second-order rate constants are approximately 109 and 107, respectively, greater than those for a similar acyclic sulfonamide. The entropy of activation for the acid-catalysed hydrolysis of the β-sultam is -80 J K-1 mol-1 which may be indicative of unimolecular ring opening, whereas that for the base-catalysed reaction, - 184 J K-1 mol-1, is consistent with a bimolecular process.
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