在2-氯TRT树脂上挂个FMOC氨基酸的方法
Weigh 10 g 2-chlorotrityl chloride resin (15 mmol) in a reaction vessel, wash with DMF (2x), swell the resin in 50 mL DMF for 10 min, drain vessel.
Weigh 10 mmol Fmoc-amino acid in a test tube, dissolve Fmoc-amino acid in 40 mL DMF, transfer the solution into the reaction vessel above, add 8.7 mL DIEA (50 mmol), swirl mixture for 30 min at room temperature.
Add 5 mL methanol into the reaction vessel and swirl for 5 min.
Drain and wash with DMF (5x).
Check substitution.
Add 50 mL 20% piperidine to remove the Fmoc group. Swirl mixture for 30 min.
Wash with DMF (5x), DCM (2x), put resin on tissue paper over a foam pad and let dry at room temperature overnight under the hood. Cover the resin with another piece of tissue paper, press lightly to break aggregates.
Weigh loaded resin.
Pack in appropriate container.
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