Ambimodal Transition States in Diels–Alder Cycloadditions of Tropolone and Tropolonate with N-Methylmaleimide**,Angewandte Chemie International Edition

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Ambimodal Transition States in Diels–Alder Cycloadditions of Tropolone and Tropolonate with N-Methylmaleimide**
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-09-01 , DOI: 10.1002/anie.202109608
Hong Zhang _{1,

2} , Mathias Kirk Thøgersen ₃ , Cooper S Jamieson ₁ , Xiao-Song Xue ₁ , Karl Anker Jørgensen ₃ , Kendall N Houk ₁

Affiliation

The cycloaddition of tropolone with maleimide in the presence of weak base involves an ambimodal transition state that leads directly to both endo- and exo-adducts.