Carbon Disulfide → HCID 178504226, compound

HRID 1890951Notes

Reaction equation

HRID 1890951 reaction equation
[CH3:1][Si:2]([CH3:21])([CH3:20])[CH2:3][CH2:4][O:5][CH2:6][N:7]1[CH:11]=[C:10]([C:12]2[N:17]=[N:16][C:15]([NH:18][NH2:19])=[CH:14][CH:13]=2)[CH:9]=[N:8]1.C([O-])([O-])=O.[K+].[K+].[C:28](=S)=[S:29]>C(O)C.O>[CH3:1][Si:2]([CH3:21])([CH3:20])[CH2:3][CH2:4][O:5][CH2:6][N:7]1[CH:11]=[C:10]([C:12]2[CH:13]=[CH:14][C:15]3[N:16]([C:28]([SH:29])=[N:19][N:18]=3)[N:17]=2)[CH:9]=[N:8]1

Participants

6

Reactant 3

HCID 6348Carbon DisulfideHCID 11430Potassium CarbonateHCID 68975416{6-[1-(2-Trimethylsilanyl-ethoxymethyl)-1H-pyrazol-4-yl]-pyridazin-3-yl}-hydrazine

Product 1

HCID 178504226HCID 178504226, compound

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of {6-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazol-4-yl]-pyridazin-3-yl}-hydrazine (490 mg, 1.6 mmol) in ethanol (6.5 mL) and water (1.8 mL) was added K2CO3 (359 mg, 2.6 mmol), followed by CS2 (0.212 mL, 3.5 mmol). The mixture was stirred and heated at 80° C. for 3 h under nitrogen atmosphere. The mixture was cooled to room temperature and concentrated to 50% volume in vacuo and acidified to pH 1 with 1 N aqueous HCl. The resulting precipitate was collected, washed with water, and dried in vacuo to provide title compound as a dark red solid (quantitative yield): 1H NMR (DMSO-d6) δ 0.01 (9H, s), 0.90 (2H, t), 3.63 (2H, t), 5.56 (2H, s), 7.82 (1H, d), 8.24 (1H, d), 8.27 (1H, s), 8.80 (1H, s), 15.23 (1H, bs); MS (m/z) 349 [M+H]+.

Workup

  1. temperatureThe mixture was cooled to room temperature
  2. concentrationconcentrated to 50% volume in vacuo
  3. customThe resulting precipitate was collected
  4. washwashed with water
  5. customdried in vacuo

Sources & evidence

ORD record
ord-1bef38ff57354014950cc9e49ea2df5f
Source dataset
uspto-grants-2013_08
Patent number
US08507489B2

Reaction notes

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