N n dmethylformamide

Sodium tetrachloropalladate(II) (Na₂PdCl₄, 99.995%), gold(III) chloride hydrate (HAuCl₄, ≥49% Au basis), sodium hydroxide (NaOH, ≥98%), sodium borohydride (NaBH₄, ≥99%) cetyltrimethylammonium bromide (CTAB, ≥99%), ascorbic acid (≥99.0%), 1-hydroxybenzotriazole hydrate (HOBt, 99%), N,N’-diisopropylcarbodiimide (DIC, 99%), acetic anhydride (Ac₂O, 99.5%), ethanol (≥99.5%), methanol (MeOH, ≥99.5%), 1-octanol (≥99%), dichloromethane (CH₂Cl₂, ≥99.9%), ethyl acetate (EtOAc, 99.8%), tetrahydrofuran (THF, ≥99.9%), ethylene glycol (EG, ≥99%), N,N-dmethylformamide (DMF, ≥99%), pyridine (≥99.9%), iodobenzene (98%), 4-iodotoluene (≥99%); 4-iodobenzoic acid (98%), biphenyl-4-carboxamide (96%), phenylboronic acid (PhB(OH)₂, >98%), deuterated chloroform (CDCl₃, 99.8%), deuterated dimethyl sulfoxide (DMSO-d6, 99.9%), trifluoroacetic acid (TFA, ≥99.0%), potassium carbonate (K₂CO₃, ≥99.0%) and magnesium sulfate (MgSO₄, ≥99.5%) were all purchased from Sigma-Aldrich, and used as received without further purification except THF which was distilled to remove tutylated hydroxytoluene (BHT). NovaSyn TGR resin (0.25 mmol/g loading) was purchased from EMD Millipore. Sartorius ultrapure water (18.2 MΩ•cm) was used in all preparations.