Реакция #2175442

Уравнение реакции

Diisopropylcarbodiimide

4-(4-(5-chloro-2-fluorenylmethoxycarbonylamino-benzoyl)-phenoxymethyl)phen oxyacetic acid

hydroxybenzotriazole monohydrate

ninhydrin

→

2-Aminobenzophenone

Растворители

DMF

Условия реакции

Обработка

1. 1
   workup.WAITvortexed for 24 hours at which point
2. 2
   ФильтрацияThe solvent and reagents were filtered away from the solid support
3. 3
   Промывкаthe support was rinsed five times with 20 mL DMF and five times with 20 mL CH2Cl2 (for
4. 4
   Промывкаeach rinse the mixture
5. 5
   workup.WAITwas vortexed for at least 30 seconds
6. 6
   Фильтрацияbefore filtering off the solvent) and
7. 7
   Другоеthen dried in vacuo for 12 hours
8. 8
   Другоеto give 5

Методика

To a 30 mL peptide reaction flask was added 4-(4-(5-chloro-2-fluorenylmethoxycarbonylamino-benzoyl)-phenoxymethyl)phen oxyacetic acid (1.52 g, 2.4 mmol, 2.0 equivalents), aminomethyl resin (1.99 g, 1.19 mmol of 1% crosslinked divinylbenzene-styrene, 100 mesh size, substitution level 0.60 milliequivalents/g), and hydroxybenzotriazole monohydrate (0.808 g, 5.28 mmol, 4.4 equivalents). Anhydrous DMF (12 mL) was added to the flask and the mixture was vortexed for 0.5 hour to fully solvate the resin. Diisopropylcarbodiimide (808 mg, 5.28 mmol, 4.4 equivalents) was added by syringe. The reaction flask was stoppered and then vortexed for 24 hours at which point the ninhydrin test on approximately 10 mg of the solid support demonstrated that coupling was complete. The solvent and reagents were filtered away from the solid support and the support was rinsed five times with 20 mL DMF and five times with 20 mL CH2Cl2 (for each rinse the mixture was vortexed for at least 30 seconds before filtering off the solvent) and then dried in vacuo for 12 hours to give 5.

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