Triethyl methanetricarboxylate → 2-hydroxy-4-oxo-7-(5-trifluoromethyl-pyridin-2-yl)-5,6,7,8-tetrahydro-4H-9-thia-1,4a,7-triaza-fluorene-3-carboxylic acid ethyl ester

HRID 44445

Reaktionsgleichung

[F:1][C:2]([F:20])([F:19])[C:3]1[CH:4]=[CH:5][C:6]([N:9]2[CH2:14][CH2:13][C:12]3[N:15]=[C:16]([NH2:18])[S:17][C:11]=3[CH2:10]2)=[N:7][CH:8]=1.[CH:21]([C:32](OCC)=[O:33])([C:27](OCC)=[O:28])[C:22]([O:24][CH2:25][CH3:26])=[O:23]>C1(C)C(C)=CC=CC=1>[CH2:25]([O:24][C:22]([C:21]1[C:27](=[O:28])[N:15]2[C:16]([S:17][C:11]3[CH2:10][N:9]([C:6]4[CH:5]=[CH:4][C:3]([C:2]([F:19])([F:1])[F:20])=[CH:8][N:7]=4)[CH2:14][CH2:13][C:12]=32)=[N:18][C:32]=1[OH:33])=[O:23])[CH3:26]

Komponenten

Reaktionsbedingungen

Temperatur: 145 °C

Versuchsvorschrift

The mixture of 5-(5-trifluoromethyl-pyridin-2-yl)-4,5,6,7-tetrahydro-thiazolo[5,4-c]pyridin-2-ylamine (5.7 gm, 0.019 mol) and triethyl methanetricarboxylate (16.1 ml, 0.076 mol) in xylene (100 ml) was heated at 140-150° C. for 6 hours. Xylene was evaporated and diethyl ether was then added and the suspension was stirred for 15 minutes. It was filtered and washed with ether. The crude solid was digested with dichloromethane (200 ml) and filtered to remove insoluble residue. Dichloromethane layer was distilled off under vacuum to give 1.3 gm of title compound.

Aufarbeitung

customXylene was evaporated
additiondiethyl ether was then added
filtrationIt was filtered
washwashed with ether
filtrationfiltered
customto remove insoluble residue
distillationDichloromethane layer was distilled off under vacuum

Quellen und Nachweise

ORD-Eintrag: ord-2f262340c5794983a7389138666a2698
Quelldatensatz: uspto-grants-2013_09
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08541430B2

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