Ammonium Chloride → HCID 59497521, compound

HRID 388488

Reaction equation

[CH2:1]([NH:8][C@@H:9]([CH3:16])[C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Li]CCCC.[C:22]([O:29][CH2:30][CH3:31])(=[O:28])/[CH:23]=[CH:24]/[CH2:25][CH2:26][CH3:27].[NH4+].[Cl-]>C1COCC1>[CH2:30]([O:29][C:22](=[O:28])[CH2:23][C@@H:24]([N:8]([CH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)[C@H:9]([C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1)[CH3:16])[CH2:25][CH2:26][CH3:27])[CH3:31]

Participants

Conditions

Temperature: -78 °C

Procedure

To a solution of (S)-(−)-N-benzyl-alpha-methyl-benzylamine (50 mL, 239 mmol) in THF (150 mL) at 0° C. is added nBuLi (2.5 M in THF) (100 mL, 250 mmol) under nitrogen atmosphere. The solution is cooled to −78° C. and ethyl trans-2-hexenoate (16.6 g, 117 mmol) is added. The solution is stirred for 1 hour and saturated NH4Cl solution is added. The solution is warmed to room temperature and is extracted with EtOAc. The combined organic layer is dried with MgSO4 and is filtered. The filtrate is concentrated and the residue is purified by flash chromatography with 5% EtOAc in Hexane as the eluent to afford the (S)-3-[Benzyl-((S)-1-phenyl-ethyl)-amino]-hexanoic acid ethyl ester (20.8 g, 50%) as a colorless oil.

Workup

temperatureThe solution is warmed to room temperature
extractionis extracted with EtOAc
dry with materialThe combined organic layer is dried with MgSO4
filtrationis filtered
concentrationThe filtrate is concentrated
customthe residue is purified by flash chromatography with 5% EtOAc in Hexane as the eluent

Sources & evidence

ORD record: ord-46acb57131954e39b0b4a0339f750930
Source dataset: uspto-grants-2013_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08377949B2

Linked notes

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