Activatable heavy and light thioglycoside fluorous tags.82,83 Part A: Reagents and conditions (a) SC(NH2)2, EtOH, reflux, 4 h, then NaOH(aq), reflux, 2 h; (b) BF3·OEt2, PhCF3, rt, 18 h, 82% from 258; (c) NaOMe, MeOH-HFE7100-THF, rt, 1 h; (d) NIS (2.0 equiv.), TMSOTf (0.2 equiv.), DCM, rt, 20 h, 71%; (e) PhCH(OMe)2, CSA, MeCN-HFE7100, rt, 1 h; (f) Ac2O, TEA, DMAP, THF, rt, 4 h; (g) Et3SiH, BF3·OEt2, DCM-HFE7100, −10 °C, 20 h; (h) Cu(OTf)2 (0.2 equiv.), DCM, 0 °C, 2 h; (i) Br(CH2)6OH (4.0 equiv.), NIS (4.0 equiv.), TMSOTf (0.4 equiv.), DCM, 0 °C, 1 h, (j) Ac2O, BF3·OEt2, PhCF3, 50 °C, 3 h; (k) NaOMe, MeOH-HFE7100-THF, rt, 20 h. Part B: Reagents and conditions (a) 1M aq Na2CO3, EtOAc, rt, 2 h; (b) MeONa, MeOH, rt, 5 h; (c) BzCl (20 equiv.), DMAP (1 equiv.), pyridine, rt, 15 h; (d) BnBr, aq 50% NaOH, TBAB (1 equiv.), DCM, rt, 20 h.