Carbon Disulfide → HCID 178503399, compound

HRID 1672789Notes

Reaction equation

[CH3:1][S:2][C:3]1[N:4]=[CH:5][C:6]2[C:15](=[O:16])[N:14]([C:17]3[CH:18]=[C:19]([CH:24]=[CH:25][CH:26]=3)[C:20]([NH:22][NH2:23])=[O:21])[CH2:13][C@H:12]3[N:8]([CH2:9][CH2:10][CH2:11]3)[C:7]=2[N:27]=1.[OH-].[K+].C(O)C.[C:33](=S)=[S:34]>C(O)C>[SH:34][C:33]1[O:21][C:20]([C:19]2[CH:18]=[C:17]([N:14]3[CH2:13][C@H:12]4[N:8]([CH2:9][CH2:10][CH2:11]4)[C:7]4[N:27]=[C:3]([S:2][CH3:1])[N:4]=[CH:5][C:6]=4[C:15]3=[O:16])[CH:26]=[CH:25][CH:24]=2)=[N:22][N:23]=1

Participants

Conditions

Temperature: 40 °C

Procedure

(S)-3-(9-Methylthio-6-oxo-2,3,3a,4-tetrahydro-1H,6H-5,8,10,10b-tetraazabenzo[e]azulen-5-yl)benzoic hydrazide (50 mg, 0.13 mmol) obtained in Step 2 of Example 56 was suspended in ethanol (1.0 mL), and the mixture was stirred at 40° C. for 3 hours after adding a 0.25 mol/L potassium hydroxide/ethanol solution (0.52 mL, 0.13 mmol) and carbon disulfide (0.11 mL, 1.80 mmol). After concentrating the mixture under reduced pressure, water was added to the resulting residue, and the pH was adjusted to 4 by addition of a 6 mol/L aqueous hydrochloric acid solution. The precipitated white solid was filtered off to give (S)-5-[3-(5-mercapto-1,3,4-oxadiazol-2-yl)phenyl]-9-methylthio-1,2,3,3a,4,5-hexahydro-5,8,10,10b-tetraazabenzo[e]azulen-6-one (37 mg, 66%).

Workup

concentrationAfter concentrating the mixture under reduced pressure, water
additionwas added to the resulting residue
additionthe pH was adjusted to 4 by addition of a 6 mol/L aqueous hydrochloric acid solution
filtrationThe precipitated white solid was filtered off

Sources & evidence

ORD record: ord-db783a43bd844712b21480e97c2c9df3
Source dataset: uspto-grants-2011_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07998954B2

Reaction notes

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