Triethylamine → tert-butyl 2-[2-(3 {[tert-butyl(dimethyl)silyl]oxy}phenyl)-4-(5-chloro-2-fluorophenyl)-2,5-dihydro-1H-pyrrol-1-yl]-1,1-dimethyl-2-oxoethylcarbamate

HRID 1394925Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1394925
[Si:1]([O:8][C:9]1[CH:10]=[C:11]([CH:15]2[CH:19]=[C:18]([C:20]3[CH:25]=[C:24]([Cl:26])[CH:23]=[CH:22][C:21]=3[F:27])[CH2:17][N:16]2[C:28](OC(C)(C)C)=[O:29])[CH:12]=[CH:13][CH:14]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].C(N(CC)CC)C.C1CN([P+](ON2N=NC3C=CC=CC2=3)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.[C:75]([O:79][C:80]([NH:82][C:83](C)([CH3:87])[C:84](O)=O)=[O:81])([CH3:78])([CH3:77])[CH3:76]>CN(C=O)C>[Si:1]([O:8][C:9]1[CH:10]=[C:11]([CH:15]2[CH:19]=[C:18]([C:20]3[CH:25]=[C:24]([Cl:26])[CH:23]=[CH:22][C:21]=3[F:27])[CH2:17][N:16]2[C:28](=[O:29])[C:83]([NH:82][C:80](=[O:81])[O:79][C:75]([CH3:76])([CH3:78])[CH3:77])([CH3:87])[CH3:84])[CH:12]=[CH:13][CH:14]=1)([C:4]([CH3:6])([CH3:5])[CH3:7])([CH3:2])[CH3:3]

Komponenten

6

Edukt 4

HCID 8471TriethylamineHCID 2724699PyBOPHCID 2733845N-((1,1-dimethylethoxy)carbonyl)-2-methyl-alanineHCID 59682334tert-butyl 2-(3-{[tert-butyl(dimethyl)silyl]oxy)phenyl)-4-(5-chloro-2-fluorophenyl)-2,5-dihydro-1H-pyrrole-1-carboxylate

Produkt 1

HCID 59656598tert-butyl 2-[2-(3 {[tert-butyl(dimethyl)silyl]oxy}phenyl)-4-(5-chloro-2-fluorophenyl)-2,5-dihydro-1H-pyrrol-1-yl]-1,1-dimethyl-2-oxoethylcarbamate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A solution of tert-butyl 2-(3-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-4-(5-chloro-2-fluorophenyl)-2,5-dihydro-1H-pyrrole-1-carboxylate (17-2,276 mg, 0.683 mmol, 1 equiv), triethylamine (277 mg, 2.73 mmol, 4 equiv), PYBOP (711 mg, 1.37 mmol, 2 equiv) and 2-[(tert-butoxycarbonyl)amino]-2-methylpropanoic acid (278 mg, 1.37 mmol, 2 equiv) in in DMF (10 mL) was warmed at 60° C. for 18 hours. The solution was concentrated and the residue was partitioned between ethyl acetate and saturated aqueous sodium bicarbonate solution. The organic layer was washed with brine, dried over magnesium sulfate and concentrated. The residue was purified by flash column chromatography. Elution with 10% ethyl acetate/hexanes to 20% ethyl acetate/hexanes gave tert-butyl 2-[2-(3{[tert-butyl(dimethyl)silyl]oxy}phenyl)-4-(5-chloro-2-fluorophenyl)-2,5-dihydro-1H-pyrrol-1-yl]-1,1-dimethyl-2-oxoethylcarbamate (17-3) as a pale yellow gum. LRMS m/z (M+H) 588.9 found, 589.0 required.

Aufarbeitung

  1. concentrationThe solution was concentrated
  2. customthe residue was partitioned between ethyl acetate and saturated aqueous sodium bicarbonate solution
  3. washThe organic layer was washed with brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated
  6. customThe residue was purified by flash column chromatography
  7. washElution with 10% ethyl acetate/hexanes to 20% ethyl acetate/hexanes

Quellen und Nachweise

ORD-Eintrag
ord-f007795ff39148bfb9ca8c4356e9586f
Quelldatensatz
uspto-grants-2008_03
Patentnummer
US07348440B2

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