Cyclopropylamine → HCID 68616608, compound

HRID 1158398Notes

Reaction equation

HRID 1158398 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][C@@H:11]([CH:13]=O)[C@H:10]([CH2:15][N:16]([C:20](=[O:35])[C:21]2[CH:26]=[CH:25][C:24]([CH2:27][CH3:28])=[C:23]([O:29][CH2:30][CH2:31][CH2:32][O:33][CH3:34])[CH:22]=2)[CH:17]([CH3:19])[CH3:18])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH:36]1([NH2:39])[CH2:38][CH2:37]1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+].C([O-])(O)=O.[Na+]>ClC(Cl)C.C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:9][C@@H:10]([CH2:15][N:16]([C:20](=[O:35])[C:21]2[CH:26]=[CH:25][C:24]([CH2:27][CH3:28])=[C:23]([O:29][CH2:30][CH2:31][CH2:32][O:33][CH3:34])[CH:22]=2)[CH:17]([CH3:18])[CH3:19])[C@H:11]([CH2:13][NH:39][CH:36]2[CH2:38][CH2:37]2)[CH2:12]1)=[O:7])([CH3:3])([CH3:2])[CH3:4]

Participants

7

Reactant 4

HCID 69828CyclopropylamineHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 86622389HCID 86622389, compound

Product 1

HCID 68616608HCID 68616608, compound

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 63651,1-DichloroethaneSolvent

Procedure

To a solution of (3R,4S)-3-({[4-ethyl-3-(3-methoxy-propoxy)-benzoyl]-isopropyl-amino}-methyl)-4-formyl-pyrrolidine-1-carboxylic acid tert-butyl ester (described under step C in example 152) (6.9 g, 11.88 mmol) in dichloroethane (112 mL), cyclopropylamine (0.92 mL, 13.1 mmol) and NaBH(OAc)3 (3.52 g, 16.63 mmol) are added. The solution is stirred at RT overnight, then diluted with CH2Cl2. A saturated solution of NaHCO3 is added, the layers are separated and the aqueous one extracted twice with CH2Cl2. The combined organic extracts are dried over Na2SO4, filtered, and concentrated in vacuo. The crude material is purified by flash chromatography on silica gel (eluent: AcOEt/MeOH 100:0 to 85:15) to give the title compound. MS (LC-MS): 532.3 [M+H]+; tR (HPLC, Macherey-Nagel Nucleosil C18 column, 10-100% CH3CN/H2O/5 min, 100% CH3CN/3 min, CH3CN and H2O containing 0.1% TFA, flow: 1.5 ml/min): 5.58 min.

Workup

  1. customthe layers are separated
  2. extractionthe aqueous one extracted twice with CH2Cl2
  3. dry with materialThe combined organic extracts are dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe crude material is purified by flash chromatography on silica gel (eluent: AcOEt/MeOH 100:0 to 85:15)

Sources & evidence

ORD record
ord-e1b47636879f4810a5785b0ca7d6daa5
Source dataset
uspto-grants-2010_10
Patent number
US07807709B2

Reaction notes

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