Synthesis of the heterogeneous catalyst 18

Reagent	Concentration	Amount
Merrifield resin	0.204 mmol	200 mg
tert-butyl (S)-(1-(butylamino)-3-(4-hydroxyphenyl)-1-oxopropan-2-yl)carbamate 16	0.24 mmol	100 mg
Potassium iodide	0.02 mmol	3.4 mg
Sodium hydride (60% in mineral oil)	0.31 mmol	12 mg
N,N-dimethylformamide	0.051 M	4 mL