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Reagents and conditions: (a) NBS, DCM, 0 °C; (b) tert-butanesulfinamide, tetraethyl titanate, THF, reflux; (c) NaBH4, THF, H2O, r.t.; (d) bis(trichloromethyl) carbonate, THF, r.t.; (e) dimethylsulfate: Cs2CO3, acetonitrile, r.t.; (f) phenylboronic acids, Pd(P(Ph)3)4, Na2CO3, N2, H2O/EtOH/toluene, 80 °C; (g) diverse linkers, NaH, DMF, 0 °C to r.t.; (h) 3-bromopropyne, Cs2CO3, DMF, 0 °C to r.t.; (i) diverse linkers, CuSO4, sodium erythorbate, MeOH, H2O, r.t.
