Figure 1.

Scheme for the manufacture of the 4‐MEP linked magnetic supports used in this study. Key: a _i NaOH, rt; a _ii washing (water → NaCl → methanol), rt; b _i 3‐aminopropyltriethoxysilane, glacial acetic acid, methanol, 600 s @ 13 000 rpm → 2 h @ 6000 rpm, rt; b _ii glycerol, N2, 11 h @ 110 °C, 0.5 h @ 160 °C; b _iii washing (water → NaCl → water), rt; c _i glutaraldehyde, pH 11, 1 h, rt; c _ii washing (water → NaCl → water); d epichlorohydrin, NaOH, NaBH₄, 6 h, rt; e allyl bromide, NaOH, NaBH₄, DMSO, 18–20 h, rt; f allyl glycidyl ether, NaOH, NaBH₄, DMSO, 18–20 h, rt; g divinylsulphone, Na₂CO₃, 1 h, rt; h N‐bromosuccinimide, 1 h, rt; j 4‐mercaptoethyl pyridine hydrochloride, Na₂CO₃, NaBH₄, 48 h, rt.