Triethylamine → HCID 67999035, compound

HRID 932072Notes

Reaction equation

[NH2:1][C:2](=O)[CH2:3][C@@:4]1([CH3:35])[CH2:9][C@H:8]([C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([Cl:16])[CH:11]=2)[C@@H:7]([C:17]2[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=2)[N:6]([C@@H:24]([CH2:32][CH3:33])[C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[C:5]1=[O:34].C(N(CC)CC)C.FC(F)(F)C(OC(=O)C(F)(F)F)=O>C1COCC1>[Cl:16][C:12]1[CH:11]=[C:10]([C@@H:8]2[C@@H:7]([C:17]3[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=3)[N:6]([C@@H:24]([CH2:32][CH3:33])[C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[C:5](=[O:34])[C@:4]([CH2:3][C:2]#[N:1])([CH3:35])[CH2:9]2)[CH:15]=[CH:14][CH:13]=1

Participants

Conditions

Temperature: 0 °C

Procedure

A solution of (S)-tert-butyl 2-((3R,5R,6S)-3-(2-amino-2-oxoethyl)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-methyl-2-oxopiperidin-1-yl)butanoate (105 mg, 0.197 mmol; Example 128, Step A) and triethylamine (137 μL, 0.984 mmol) in THF (3.3 mL) was treated with 2,2,2-trifluoroacetic anhydride (69.8 μL, 0.492 mmol) at 0° C. After being stirred at 0° C. for 3 h, the reaction was quenched (10% citric acid), extracted (2×EtOAc) and washed (sat. aq. NaCl solution). The combined organic layers were dried (Na2SO4) and concentrated under reduced pressure. Purification of the residue by chromatography on silica gel (12 g SiO2, 20 to 50% EtOAc/Hex, a gradient elution) provided the title compound as a colorless foam.

Workup

customthe reaction was quenched (10% citric acid)
extractionextracted (2×EtOAc)
washwashed (sat. aq. NaCl solution)
dry with materialThe combined organic layers were dried (Na2SO4)
concentrationconcentrated under reduced pressure
customPurification of the residue by chromatography on silica gel (12 g SiO2, 20 to 50% EtOAc/Hex
washa gradient elution)

Sources & evidence

ORD record: ord-d75b4bafa8024894bb41639d286081cb
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09296736B2

Reaction notes

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