Abstract
Kinetic parameters for the IMDAF reaction of 2 and 3 were determined. For the equilibrium between 2b and 4b: ΔH° = -29.3 kJ/mol, ΔS° = −75 J/mol.K; for the conversion of 3 into 6 a significant rate enhancement by the anchoring tert -butyl group is observed: k(3b)/k(3a) = 240. The structure of 6b was proven via X-ray determination of 8.
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