bᵻtwˌiːn ˌɪntɚmˈiːdiəts tˈuː ænd θɹˈiː ðə hˈaɪdɹaɪd ɪz tɹænsfˈɜːd tə ðə kˈɑːɹbənˌaɪl fɹʌmðɪ ˈælkɑːksi lˈɪɡænd vˈaɪəɹ ɐ pˌɛɹɪsˈaɪklɪk mˈɛkənˌɪzəm.
Between intermediates 2 and 3 the hydride is transferred to the carbonyl from the alkoxy ligand via a pericyclic mechanism.