Diethyl Ether → HCID 18602836, compound

Participants

Reaction Steps

N-t-butyloxycarbonyl-L-alanyl-N-(2-indanyl)glycyl-L-proline benzylester (2.72 g, 4.95 m mole) was dissolved in 4N hydrogen chloride dioxane solution (50 ml) and the mixture was stirred for 1 hour at room temperature. The solvent was distilled under reduced pressure from the solution, and thereby a sticky residue was obtained. After addition of ethyl ether the solution was filtered and a crystalline residue was obtained on the filter paper, and immediately dried in a desiccator to obtain a white powder of L-alanyl-N-(2-indanyl)glycyl-L-proline benzylester hydrochloride (2.31 g, 4.76 m mole, yield: 96%). This product had a hygrospic nature, and gave a single spot with Rf =0.42 by silica gel thin layer chromatography (developing solvent, chloroform:methanol:triethylamine=40:2:1, Colour forming method: spraying of 0.1% ninhydrin and heating).

Provenance & Evidence