Triethylamine → HCID 86604089, compound

HRID 244542Notes

Reaction equation

[OH:1][CH2:2][C@@H:3]([NH:14][C:15]([O:17][CH2:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1)=[O:16])[CH2:4][N:5]1[CH2:13][CH2:12][CH2:11][C@H:6]1[C:7]([O:9][CH3:10])=[O:8].C(N(CC)CC)C.[CH3:32][S:33](Cl)(=[O:35])=[O:34]>ClCCl.CN(C)C1C=CN=CC=1>[CH3:32][S:33]([O:1][CH2:2][C@@H:3]([NH:14][C:15]([O:17][CH2:18][C:19]1[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=1)=[O:16])[CH2:4][N:5]1[CH2:13][CH2:12][CH2:11][C@H:6]1[C:7]([O:9][CH3:10])=[O:8])(=[O:35])=[O:34]

Participants

Conditions

Temperature: 0 °C

Procedure

Methyl 1-[(2S)-3-hydroxy-2-({[(phenylmethyl)oxy]carbonyl}amino)propyl]-L-prolinate (200 mg, 0.594 mmol) was dissolved in dichloromethane (5 mL) followed by the addition of 4-(dimethylamino)pyridine (3.6 mg, 0.039 mmol) and triethylamine (0.125 mL, 0.891 mmol) and the resulting mixture was cooled to 0° C. Methanesulfonyl chloride (0.060 mL, 0.773 mmol) was added dropwise and the reaction mixture was stirred for 1 h at 0° C. The mixture was partitioned between dichloromethane and saturated aqueous sodium bicarbonate. The organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo to afford methyl 1-[(2S)-3-[(methylsulfonyl)oxy]-2-({[(phenylmethyl)oxy]carbonyl}amino)propyl]-L-prolinate (246 mg, 100%) as a clear and colorless oil. MS (EI) for C18H27N2O7S: 415 (MH+).

Workup

customThe mixture was partitioned between dichloromethane and saturated aqueous sodium bicarbonate
dry with materialThe organic layer was dried over anhydrous magnesium sulfate
filtrationfiltered
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-3fb15f5d930f46ad8361b5c97195c234
Source dataset: uspto-grants-2014_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08658654B2

Reaction notes

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