Methanol → HCID 67075348, compound

HRID 1254520Notes

Reaction equation

HRID 1254520 reaction equation
C1C2C(COC([NH:18][C@H:19]([C:28]([N:30]([C@@H:42]([CH3:50])[CH:43]([O:47][CH2:48][CH3:49])[O:44][CH2:45][CH3:46])[CH2:31][C:32]3[C:41]4[C:36](=[CH:37][CH:38]=[CH:39][CH:40]=4)[CH:35]=[CH:34][CH:33]=3)=[O:29])[CH2:20][C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])=O)C3C(=CC=CC=3)C=2C=CC=1.N1CCCCC1.CC(=O)OCC.CO>C(Cl)Cl>[NH2:18][C@H:19]([C:28]([N:30]([C@@H:42]([CH3:50])[CH:43]([O:47][CH2:48][CH3:49])[O:44][CH2:45][CH3:46])[CH2:31][C:32]1[C:41]2[C:36](=[CH:37][CH:38]=[CH:39][CH:40]=2)[CH:35]=[CH:34][CH:33]=1)=[O:29])[CH2:20][C:21]([O:23][C:24]([CH3:27])([CH3:25])[CH3:26])=[O:22]

Participants

6

Reactant 4

HCID 887MethanolHCID 8082PiperidineHCID 8857Ethyl AcetateHCID 67088478(S)-tert-Butyl 3-(((9H-fluoren-9-yl)methoxy)carbonylamino)-4-(((S)-1,1-diethoxypropan-2-yl)(naphthalen-1-ylmethyl)amino)-4-oxobutanoate

Product 1

HCID 67075348HCID 67075348, compoundYield 83.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent3×

Procedure

(S)-tert-Butyl 3-(((9H-fluoren-9-yl)methoxy)carbonylamino)-4-(((S)-1,1-diethoxypropan-2-yl)(naphthalen-1-ylmethyl)amino)-4-oxobutanoate (Compound III-16) 18.4 g (27 mmol) and piperidine 22.7 g (270 mmol) were added in DCM (90 ml). The mixture was stirred for 1.5 h at room temperature. The mixture was diluted with DCM (200 ml) and washed with water (150 ml×3). The solution was concentrated in vacuo. The residue was purified by column chromatography on silica gel with PE:EA=50:1 to DCM:MeOH=10:1 to give the title compound 10.3 g, (yield 83%).

Workup

  1. washwashed with water (150 ml×3)
  2. concentrationThe solution was concentrated in vacuo
  3. customThe residue was purified by column chromatography on silica gel with PE

Sources & evidence

ORD record
ord-b394e881d75c4586aa5db7b19bf04a31
Source dataset
uspto-grants-2013_06
Patent number
US08455488B2

Reaction notes

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