Potassium cyanate → HCID 58204026, compound

HRID 1849475Notes

Reaction equation

HRID 1849475 reaction equation
[CH:1]([N:4]1[C:8]([C:9]2[S:10][C:11]3[CH2:12][CH2:13][O:14][C:15]4[CH:22]=[C:21]([CH:23]([NH2:25])[CH3:24])[CH:20]=[CH:19][C:16]=4[C:17]=3[N:18]=2)=[N:7][C:6]([CH3:26])=[N:5]1)([CH3:3])[CH3:2].[O-:27][C:28]#[N:29].[K+]>C(O)(=O)C.O>[CH:1]([N:4]1[C:8]([C:9]2[S:10][C:11]3[CH2:12][CH2:13][O:14][C:15]4[CH:22]=[C:21]([CH:23]([NH:25][C:28]([NH2:29])=[O:27])[CH3:24])[CH:20]=[CH:19][C:16]=4[C:17]=3[N:18]=2)=[N:7][C:6]([CH3:26])=[N:5]1)([CH3:3])[CH3:2]

Participants

5

Reactant 2

HCID 11378442Potassium cyanateHCID 58203925HCID 58203925, compound

Product 1

HCID 58204026HCID 58204026, compoundYield 4.1%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 962WaterSolvent2×

Conditions

Temperature
50 °C

Procedure

To a solution of 1-[2-(2-isopropyl-5-methyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-8-yl]-ethylamine (0.120 g, 0.325 mmol) in acetic acid (0.0923 mL) and water (3.45 mL) was added a solution of potassium cyanate (0.132 g, 0.00162 mol) in Water (1.0 mL, 0.056 mol) dropwise. The reaction was stirred at 50° C. overnight, cooled down, filtered, and rinsed with cold water. The crude was precipitated in methanol/water and repurified by reverse-phase HPLC to give 542 as a beige solid (5.5 mg). MS(ESI+) 413.1. 1H NMR (400 MHz, DMSO) δ 8.27 (d, J=8.2 Hz, 1H), 7.12 (dd, J=8.3, 1.5 Hz, 1H), 6.98 (d, J=1.4 Hz, 1H), 6.47 (d, J=8.2 Hz, 1H), 5.83-5.68 (m, 1H), 5.47 (s, 2H), 4.70 (p, J=7.1 Hz, 1H), 4.44-4.25 (m, 2H), 3.42 (t, J=4.9 Hz, 2H), 2.32 (s, 3H), 1.52 (dd, J=6.5, 1.6 Hz, 6H), 1.32 (d, J=7.0 Hz, 3H)

Workup

  1. temperaturecooled down
  2. filtrationfiltered
  3. washrinsed with cold water
  4. customThe crude was precipitated in methanol/water
  5. customrepurified by reverse-phase HPLC

Sources & evidence

ORD record
ord-9cac46dcf41e4fc486ad0b7f537a9321
Source dataset
uspto-grants-2015_02
Patent number
US08952043B2

Reaction notes

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