Diisopropylethylamine → tert-Butyl[(1R,2R)-2-{[(4-bromo-5 ethylthiophen-2-yl)carbonyl]amino}-3,3-difluorocyclohexyl]carbamate

HRID 1842595Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1842595
[Br:1][C:2]1[CH:3]=[C:4]([C:9]([OH:11])=O)[S:5][C:6]=1[CH2:7][CH3:8].F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.[NH2:39][C@H:40]1[C:45]([F:47])([F:46])[CH2:44][CH2:43][CH2:42][C@H:41]1[NH:48][C:49](=[O:55])[O:50][C:51]([CH3:54])([CH3:53])[CH3:52].C(N(C(C)C)CC)(C)C>CN(C=O)C.C(OCC)(=O)C>[C:51]([O:50][C:49](=[O:55])[NH:48][C@@H:41]1[CH2:42][CH2:43][CH2:44][C:45]([F:47])([F:46])[C@@H:40]1[NH:39][C:9]([C:4]1[S:5][C:6]([CH2:7][CH3:8])=[C:2]([Br:1])[CH:3]=1)=[O:11])([CH3:54])([CH3:52])[CH3:53]

Komponenten

7

Edukt 4

HCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 37663724-Bromo-5-ethylthiophene-2-carboxylic acidHCID 59603811tert-Butyl ((1R,2R)-2-amino-3,3-difluorocyclohexyl)carbamate

Produkt 1

HCID 89750990tert-Butyl[(1R,2R)-2-{[(4-bromo-5 ethylthiophen-2-yl)carbonyl]amino}-3,3-difluorocyclohexyl]carbamateAusbeute 78,6 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

4-Bromo-5-ethylthiophene-2-carboxylic acid (1.00 g, 4.25 mmol) and BOP (5.64 g, 12.8 mmol) were dissolved in DMF (42.5 mL) and stirred at room temperature for 5 min. To the reaction solution was added tert-butyl [(1R,2R)-2-amino-3,3-difluorocyclohexyl]carbamate (1.07 g, 4.25 mmol) and diisopropylethyl amine (1.11 mL, 6.38 mmol) and the reaction stirred at room temperature for 64 h. The reaction mixture was diluted with ethyl acetate and washed with water 3×. The organic layer was collected, dried with sodium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography (0-50% EtOAc/Hex) to give the title compound (1.56 g, 3.34 mmol). LRMS (APCI) calc'd for (C18H25BrF2N2O3S) [M+H]+, 467.1; found 466.9. 1H NMR (CDCl3, 500 MHz) δ 7.32 (s, 1H), 6.28 (s, 1H), 4.90 (s, 1H), 4.54 (s, 1H), 4.29 (s, 1H), 2.81 (q, J=7.5, 2H), 2.22 (m, 1H), 1.88 (m, 1H), 1.81 (m, 1H), 1.69 (m, 1H), 1.59 (m, 1H), 1.46 (s, 9H), 1.41 (m, 1H), 1.28 (t, J=7.3, 3H)

Aufarbeitung

  1. stirringthe reaction stirred at room temperature for 64 h
  2. washwashed with water 3×
  3. customThe organic layer was collected
  4. dry with materialdried with sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by column chromatography (0-50% EtOAc/Hex)

Quellen und Nachweise

ORD-Eintrag
ord-d8e259913f4749279045a11206275a8a
Quelldatensatz
uspto-grants-2015_02
Patentnummer
US08946237B2

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