Trifluoroacetic acid → Pyrrolidine-2-carboxylic acid (2-benzyloxy-5-oxo-tetrahydro-furan-3-yl)-amide

HRID 2363438Notes

Reaction equation

HRID 2363438 reaction equation
C(OC([N:8]1[CH2:12][CH2:11][CH2:10][CH:9]1[C:13](=[O:29])[NH:14][CH:15]1[CH2:19][C:18](=[O:20])[O:17][CH:16]1[O:21][CH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1)=O)(C)(C)C.C(O)(C(F)(F)F)=O>C(Cl)Cl>[CH2:22]([O:21][CH:16]1[CH:15]([NH:14][C:13]([CH:9]2[CH2:10][CH2:11][CH2:12][NH:8]2)=[O:29])[CH2:19][C:18](=[O:20])[O:17]1)[C:23]1[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 184690272-(2-Benzyloxy-5-oxo-tetrahydro-furan-3-ylcarbamoyl)-pyrrolidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 54539738Pyrrolidine-2-carboxylic acid (2-benzyloxy-5-oxo-tetrahydro-furan-3-yl)-amide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of 118 (405 mg, 1.0 mmol) was treated with TFA (2 mL) in CH2Cl2 (2 mL) for one hour. The reaction solution was evaporated in vacuo and azeotrapped with CH2Cl2 four times to give pyrrolidine-2-carboxylic acid (2-benzyloxy-5-oxo-tetrahydro-furan-3-yl)-amide as a pale yellow solid. 1H-NMR (500 MHz, CDCl3): δ 1.87-2.15 (m, 4H), 2.30-2.70 (m, 2H), 2.80-3.08 (m, H), 3.45 (br, 2H), 4.35-4.98 (m, 3H), 5.30-5.56 (m, H), 7.10-7.60 (m, 5H); Analytical HPLC: 7.78/8.20 min.; LC-MS: m/e=305 (M+H+).

Workup

  1. customThe reaction solution was evaporated in vacuo

Sources & evidence

ORD record
ord-cbd5cfdfe38d4508b80722e1869b69b6
Source dataset
uspto-grants-2014_04
Patent number
US08691848B2

Reaction notes

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