Mechanistic study of the [2 + 2] cycloaddition of ethylene with ketene derivatives via MEDT. - Chellegui, Mohamed; Salhi, Ines; Ben Ahmed, Ali; Benmetir, Sofiane; Salih, Raad Nasrullah; Mohammad-Salim, Haydar A.; de Julián-Ortiz, Jesus Vicente (Structural Chemistry, 2026)