1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) → 4-[5-(4-Methanesulfonyl-piperazin-1-yl)-2-methyl-2,3-dihydro-furo[2,3-c]pyridin-2-yl]-piperidine-1-carboxylic acid tert-butyl ester

HRID 1184776Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1184776
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2([CH3:24])[O:23][C:17]3=[CH:18][N:19]=[C:20](Cl)[CH:21]=[C:16]3[CH2:15]2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Cl.[CH3:26][S:27]([N:30]1[CH2:35][CH2:34][NH:33][CH2:32][CH2:31]1)(=[O:29])=[O:28].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.CC([O-])(C)C.[K+]>C1(C)C=CC=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2([CH3:24])[O:23][C:17]3=[CH:18][N:19]=[C:20]([N:33]4[CH2:34][CH2:35][N:30]([S:27]([CH3:26])(=[O:29])=[O:28])[CH2:31][CH2:32]4)[CH:21]=[C:16]3[CH2:15]2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Komponenten

8

Edukt 4

HCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 162656121-Methanesulfonylpiperazine hydrochlorideHCID 23665647Potassium tert-butoxideHCID 866749014-(5-Chloro-2-methyl-2,3-dihydrofuro[2,3-c]pyridin-2-yl)piperidine-1-carboxylic acid tert-butyl ester

Produkt 1

HCID 679902714-[5-(4-Methanesulfonyl-piperazin-1-yl)-2-methyl-2,3-dihydro-furo[2,3-c]pyridin-2-yl]-piperidine-1-carboxylic acid tert-butyl ester

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 9811564Bis(dibenzylideneacetone)palladiumKatalysatorHCID 962WaterLösungsmittelHCID 1140TolueneLösungsmittel

Reaktionsbedingungen

Temperatur
105 °C

Versuchsvorschrift

4-(5-Chloro-2-methyl-2,3-dihydro-furo[2,3-c]pyridin-2-yl)-piperidine-1-carboxylic acid tert-butyl ester (100 mg) is added to a mixture of 1-(methylsulfonyl)piperazine hydrochloride (70 mg), Pd2(dba)3 (65 mg), Xantphos (123 mg), and potassium tert-butylate (75 mg) in toluene (4 mL) under an argon atmosphere. The reaction mixture is stirred in an oil bath at 105° C. over night. After cooling to room temperature water is added and the mixture is extracted with ethyl acetate. The combined extracts are concentrated in vacuo and the residue is chromatographed on silica gel (cyclohexane/ethyl acetate 50:50→0:100) to give the title compound. LC (method 1): tR=1.03 min; Mass spectrum (ESI+): m/z=481 [M+H]+.

Aufarbeitung

  1. additionis added
  2. extractionthe mixture is extracted with ethyl acetate
  3. concentrationThe combined extracts are concentrated in vacuo
  4. customthe residue is chromatographed on silica gel (cyclohexane/ethyl acetate 50:50→0:100)

Quellen und Nachweise

ORD-Eintrag
ord-3b0a3207384e4f828e02748b94c924cb
Quelldatensatz
uspto-grants-2014_03
Patentnummer
US08669271B2

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