Fig. 5: Late-stage modifications.

[a]Metalation yields was determined by 1H-NMR analysis of D2O-quenched reaction aliquots. All other yields refer to isolated compounds. HetAr = N-Me-5-indolyl, Ar1 = 4-OCF3-C6H4, Ar2 = 4-Cl-C6H4.

[a]Metalation yields was determined by 1H-NMR analysis of D2O-quenched reaction aliquots. All other yields refer to isolated compounds. HetAr = N-Me-5-indolyl, Ar1 = 4-OCF3-C6H4, Ar2 = 4-Cl-C6H4.