Abstract
Solid-phase synthesis is greatly dependent on the solid support. Here, we report the use of a new hydrophilic grafted surface on SynPhase lanterns in solid-phase organic chemistry. A convenient and facile solid-phase synthesis of disubstituted 1,4-benzodiazepine-2-ones on polyamide SynPhase lanterns is described. The key step of the synthesis involved a reduction-cyclization of a nitroaryl methyl ester with a mixture of tin(II) chloride dihydrate and ammonium acetate in water and ethanol at elevated temperature to give the desired target compounds. A library of 21 disubstituted 1,4-benzodiazepine-2-ones was prepared.
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