Correction to “Secondary Orbital Interactions Enhance the Reactivity of Alkynes in Diels–Alder Cycloadditions”

Page 2224. The experimental rate constant from ref 11 for the Diels–Alder reaction of 1 with TCO in methanol at room temperature was given incorrectly in Scheme 1. The correct value is 1.1 × 10³ M^–1 s^–1. The corrected Scheme 1 is provided here.

Scheme 1. Second-Order Rate Constants (M^–1 s^–1) for the Diels–Alder Reactions of 1, 2_Ethyl, and 3 with TCO and BCN, and the Relative Rates of TCO and BCN with Each Diene.

In addition, on page 2224 the reactivity difference of TCO and BCN toward diene 1 was incorrectly described as “440 times faster”; it should read “24 times faster”.