Acetic Acid → HCID 87830596, compound

HRID 458373Notes

Reaction equation

[CH2:1]([O:8][CH2:9][C@H:10]1[N:14]([S:15]([C:18]2[CH:27]=[CH:26][C:25]3[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=3)[CH:19]=2)(=[O:17])=[O:16])[CH2:13][C@@H:12]([S:28]C(=O)C)[CH2:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C[O-].[Na+].C(O)(=O)C>CO>[CH2:1]([O:8][CH2:9][C@H:10]1[N:14]([S:15]([C:18]2[CH:27]=[CH:26][C:25]3[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=3)[CH:19]=2)(=[O:16])=[O:17])[CH2:13][C@@H:12]([SH:28])[CH2:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 0 °C

Procedure

S-Acetyl deprotection: To a solution of (3S,5S)-thioacetic acid S-[5-benzyloxymethyl-1-(naphthalene-2-sulfonyl)-pyrrolidin-3-yl] ester (1.2 g) in methanol (17 ml) was added sodium methanolate (28%-solution in methanol, 0.55 ml) at 0° C. The reaction mixture was stirred at 0° C. for 1.5 h, and acetic acid (0.17 ml) was added. The reaction mixture was concentrated, and the residue was extracted with EtOAc. The organic phases were washed with water, dried over magnesium sulphate and concentrated. The residue was chromatographed on silica gel using EtOAc/hexane 1:3 and 1:2 as eluents to obtain (3S,5S)-5-benzyloxymethyl-1-(naphthalene-2-sulfonyl)-pyrrolidine-3-thiol (0.59 g) as a slightly coloured syrup, MS: 414 (MH+).

Workup

concentrationThe reaction mixture was concentrated
extractionthe residue was extracted with EtOAc
washThe organic phases were washed with water
dry with materialdried over magnesium sulphate
concentrationconcentrated
customThe residue was chromatographed on silica gel

Sources & evidence

ORD record: ord-7ab6130a63f84bb4a26f576fce7184d0
Source dataset: uspto-grants-2007_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07189756B2

Reaction notes

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