Sodium triacetoxyborohydride → 2-chloro-1'-[[1-(3-chloro-2-pyridyl)-3-methyl-pyrazol-4-yl]methyl]-4,4-difluoro-spiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]

HRID 1517620Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1517620
[Cl:1][C:2]1[S:17][C:5]2[C:6]3([CH2:16][CH2:15][NH:14][CH2:13][CH2:12]3)[O:7][CH2:8][C:9]([F:11])([F:10])[C:4]=2[CH:3]=1.[Cl:18][C:19]1[C:20]([N:25]2[CH:29]=[C:28]([CH:30]=O)[C:27]([CH3:32])=[N:26]2)=[N:21][CH:22]=[CH:23][CH:24]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl.C(O)(=O)C.ClCCl>[Cl:1][C:2]1[S:17][C:5]2[C:6]3([O:7][CH2:8][C:9]([F:11])([F:10])[C:4]=2[CH:3]=1)[CH2:12][CH2:13][N:14]([CH2:30][C:28]1[C:27]([CH3:32])=[N:26][N:25]([C:20]2[C:19]([Cl:18])=[CH:24][CH:23]=[CH:22][N:21]=2)[CH:29]=1)[CH2:15][CH2:16]3

Komponenten

7

Edukt 3

HCID 5049666Sodium triacetoxyborohydrideHCID 582685431-(3-Chloro-2-pyridyl)-3-methyl-pyrazole-4-carbaldehydeHCID 582685982'-Chloro-4',4'-difluoro-4',5'-dihydrospiro[piperidine-4,7'-[7H]thieno[2,3-c]pyran]

Produkt 1

HCID 582685742-chloro-1'-[[1-(3-chloro-2-pyridyl)-3-methyl-pyrazol-4-yl]methyl]-4,4-difluoro-spiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]Ausbeute 56,6 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 176Acetic AcidKatalysatorHCID 111,2-DichloroethaneLösungsmittelHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of 2′-chloro-4′,4′-difluoro-4′,5′-dihydrospiro[piperidine-4,7′-thieno[2,3-c]pyran] (0.2 g, 0.71 mmol) in 1,2-dichloroethane (5 mL) are added 1-(3-chloro-2-pyridyl)-3-methyl-pyrazole-4-carbaldehyde (0.19 g, 0.86 mmol) and a few drops of acetic acid. The reaction mixture is stirred at room temperature for 1 hour. Sodium triacetoxyborohydride (0.315 g, 1.43 mmol) is added and stirred at room temperature for 14 hours. After completion, the reaction mixture is diluted with dichloromethane and washed with saturated sodium bicarbonate solution and brine. The organic phase is dried over sodium sulfate and concentrated in vacuo. The crude mixture is purified by HPLC to yield 0.195 g (56%) of 2-chloro-1′-[[1-(3-chloro-2-pyridyl)-3-methyl-pyrazol-4-yl]methyl]-4,4-difluoro-spiro[5H-thieno[2,3-c]pyran-7,4′-piperidine]. MS (m/z): 485 (M+1).

Aufarbeitung

  1. stirringstirred at room temperature for 14 hours
  2. washwashed with saturated sodium bicarbonate solution and brine
  3. dry with materialThe organic phase is dried over sodium sulfate
  4. concentrationconcentrated in vacuo
  5. customThe crude mixture is purified by HPLC

Quellen und Nachweise

ORD-Eintrag
ord-4649680252194f979012a7a1c5210a16
Quelldatensatz
uspto-grants-2012_07
Patentnummer
US08232289B2

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