Triethylamine → 1-(3-benzyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-2-yl)propyl methanesulfonate

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Reaktionsgleichung

[CH2:1]([C:8]1[C:13](=[O:14])[N:12]2[CH2:15][CH2:16][CH2:17][CH2:18][C:11]2=[N:10][C:9]=1[CH:19]([OH:22])[CH2:20][CH3:21])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.[CH3:30][S:31](Cl)(=[O:33])=[O:32]>C(Cl)Cl>[CH3:30][S:31]([O:22][CH:19]([C:9]1[N:10]=[C:11]2[CH2:18][CH2:17][CH2:16][CH2:15][N:12]2[C:13](=[O:14])[C:8]=1[CH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1)[CH2:20][CH3:21])(=[O:33])=[O:32]

Komponenten

Reaktionsbedingungen

Temperatur: 0 °C

Versuchsvorschrift

A mixture of 0.084 g (0.28 mmol) of the product (24) from Step 8 and 0.08 mL (0.56 mmol) of triethylamine in 2.5 mL of anhydrous DCM was cooled to 0° C. Then was added dropwise 0.03 mL (0.34 mmol) of methanesulfonyl chloride and the resulting mixture was allowed to warm to ambient temperature under nitrogen. Excess DCM was added and the reaction mixture was washed with water, saturated NaHCO3 and brine. The organic layer was then dried over MgSO4 and the solvent was removed in vacuo yielding 0.106 g (0.28 mmol, 100%) of 1-(3-benzyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-2-yl)propyl methanesulfonate (25) as a tan oil.

Aufarbeitung

temperatureto warm to ambient temperature under nitrogen
washthe reaction mixture was washed with water, saturated NaHCO3 and brine
dry with materialThe organic layer was then dried over MgSO4
customthe solvent was removed in vacuo

Quellen und Nachweise

ORD-Eintrag: ord-b32bd64ddf9145fab0ed069dc7d2ce92
Quelldatensatz: uspto-grants-2009_03
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07504405B2

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