Water → 7-(Bicyclo[2.2.1]hept-1-yl)-3-phenyl-6-(pyridin-2-ylmethoxy)-1,2,4-triazolo[4,3-b]pyridazine

HRID 380320Notes

Reaction equation

HRID 380320 reaction equation
[C:1]12([C:8]3[C:13](Cl)=[N:12][N:11]4[C:15]([C:18]5[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=5)=[N:16][N:17]=[C:10]4[CH:9]=3)[CH2:7][CH:4]([CH2:5][CH2:6]1)[CH2:3][CH2:2]2.[N:24]1[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=1[CH2:30][OH:31].C[Si]([N-][Si](C)(C)C)(C)C.[Li+].O>CN(C)C=O>[C:1]12([C:8]3[C:13]([O:31][CH2:30][C:25]4[CH:26]=[CH:27][CH:28]=[CH:29][N:24]=4)=[N:12][N:11]4[C:15]([C:18]5[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=5)=[N:16][N:17]=[C:10]4[CH:9]=3)[CH2:7][CH:4]([CH2:5][CH2:6]1)[CH2:3][CH2:2]2

Participants

6

Reactant 4

HCID 962WaterHCID 11474PiconolHCID 2733832Lithium HexamethyldisilazideHCID 538792557-(Bicyclo[2.2.1]hept-1-yl)-6-chloro-3-phenyl-1,2,4-triazolo[4,3-b]pyridazine

Product 1

HCID 98870707-(Bicyclo[2.2.1]hept-1-yl)-3-phenyl-6-(pyridin-2-ylmethoxy)-1,2,4-triazolo[4,3-b]pyridazine

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 7-(bicyclo[2.2.1]hept-1-yl)-6-chloro-3-phenyl-1,2,4-triazolo[4,3-b]pyridazine (0.08 g, 0.25 mM, Example 1, step b) and 2-pyridylcarbinol (0.06 ml, 0.5 mM) in N,N-dimethylformamide (2 ml) under nitrogen was added lithium bis(trimethylsilyl)amide as a 1 mol solution in hexanes (0.375 ml). The reaction was stirred for 3 hours. Water was added until the solution became cloudy and after stirring for a further 15 minutes a solid was collected by filtration. This solid was recrystallised from ethyl acetate-hexane to give the required product (0.050 g, m.p.=166-168° C.). 1H NMR (360 MHz, DMSO) δ1.55 (2H, m), 1.91 (4H, m), 1.97 (2H, m), 2.13 (2H, m), 2.49 (1H, m), 5.77 (2H, s), 7.54 (1H, m), 7.69 (4H, s), 8.00 (1H, t, J=7.6 Hz), 8.28 (1H, s), 8.34 (2H, dd, J=7.6 and 1.5 Hz), 8.80 (1H, m); MS (ES+) m/e 398 [MH]+. Anal. Found C, 72.16; H, 5.59; N, 17.41. C24H23N5O. 0.1H2O requires C, 72.20; H, 5.86; N, 17.54%.

Workup

  1. stirringafter stirring for a further 15 minutes a solid
  2. filtrationwas collected by filtration
  3. customThis solid was recrystallised from ethyl acetate-hexane

Sources & evidence

ORD record
ord-3bcfdb04f75042c5bdb019715374c0a8
Source dataset
uspto-grants-2001_10
Patent number
US06303597B1

Reaction notes

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