NaNCO → n-[4-(3-Amino-1,2-benzisoxazol-4-yl)phenyl]urea

HRID 1817741Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1817741
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:13]3[C:14]([NH2:17])=[N:15][O:16][C:12]=3[CH:11]=[CH:10][CH:9]=2)=[CH:4][CH:3]=1.[N-:18]=[C:19]=[O:20].[Na+]>CC(O)=O.O>[NH2:17][C:14]1[C:13]2[C:8]([C:5]3[CH:4]=[CH:3][C:2]([NH:1][C:19]([NH2:18])=[O:20])=[CH:7][CH:6]=3)=[CH:9][CH:10]=[CH:11][C:12]=2[O:16][N:15]=1

Komponenten

5

Versuchsvorschrift

A solution of Example 261A (45 mg, 0.2 mmol) and sodium isocyanate (26 mg, 0.4 mmol) in HOAc (0.5 mL) and H2O (0.5 mL) was stirred overnight at rt, then diluted with water. The precipitated solid was collected by filtration and recrystallized from THF/hexanes to give an offwhite solid (35 mg, 65%). 1H NMR (300 MHz, DMSO-D6) δ ppm 5.20 (s, 2H) 5.92 (s, 2H) 7.11 (dd, J=7.3, 0.9 Hz, 1H) 7.37 (d, J=8.5 Hz, 2H) 7.46 (dd, J=8.5, 1.0 Hz, 1H) 7.57 (d, J=8.5 Hz, 2H) 7.57 (dd, J=8.1, 7.1 Hz, 1H) 8.72 (s, 1H) MS (ESI(+)) m/e 269.0 (M+H)+.

Aufarbeitung

  1. filtrationThe precipitated solid was collected by filtration
  2. customrecrystallized from THF/hexanes

Quellen und Nachweise

ORD-Eintrag
ord-556fb1d56c03493980e3132d049d51af
Quelldatensatz
uspto-grants-2009_10
Patentnummer
US07598283B2

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