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Methyl-(S)-pyrrolidin-3-yl-carbaMic acid benzyl ester synthesis

2synthesis methods
1-Pyrrolidinecarboxylic acid, 3-[methyl[(phenylmethoxy)carbonyl]amino]-, 1,1-dimethylethyl ester, (3S)-

1412977-80-0
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Yield:1286768-74-8 100%

Reaction Conditions:

with trifluoroacetic acid in dichloromethane at 25; for 16 h;

Steps:

3 Step 3: (S)-Methyl(pyrrolidin-3-yl)carbamate

To (S)-3-(((benzyloxycarbonyl)methyl)amino)pyrrolidine-1-carboxylic acid tert-butyl ester (5.7g, 17mmol) in dichloromethane (100mL) was added trifluoroacetic acid (25mL ),The resulting mixture was stirred at 25°C for 16 hours. The solvent was removed under vacuum to obtain the crude title compound (4.0 g, 100%) as a yellow oil.

References:

CN113354635,2021,A Location in patent:Paragraph 0255; 0262-0264