lˈɪθiəm dˌɪɪsəpɹˈoʊpəlˌæmaɪd ˌɛldˌiːˈeɪ ðˈɛn ɹᵻmˈuːvz ɐ pɹˈoʊtɑːn fɹʌmðɪ ˈeɪt pəzˈɪʃən; tɹˈiːtmənt ʌv ðæt ˈænaɪən wɪð tɹˈaɪmɪθəlsˌɪlɪl ˈaɪədˌaɪd lˈiːdz tə ðə sˈɪlɪlˌeɪɾᵻd ˌɪntɚmˈiːdiət fˈoːɹ.
Lithium diisopropylamide (LDA) then removes a proton from the 8 position; treatment of that anion with trimethylsilyl iodide leads to the silylated intermediate (4).