ðɪ ˌɛmpˌiːvˈiː ɹᵻdˈʌkʃən ɪz bᵻlˈiːvd tə ɡˌoʊ θɹuː ɐ kˌæɾɐlˈɪɾɪk sˈaɪkəl ɪnvˈɑːlvɪŋ ɐ sˈɪksmˈɛmbɚ ɹˈɪŋ tɹænsˈɪʃən stˈeɪt æz ʃˈoʊn ɪn fˈɪɡjɚ tˈuː.
The MPV reduction is believed to go through a catalytic cycle involving a six-member ring transition state as shown in Figure 2.