Hydrogen Sulfide → methyl 2-[5-(3-{[5-(aminocarbonothioyl)-2-pyridinyl]oxy}propoxy)-1H-indol-1-yl]propanoate

HRID 2424973Notes

Reaction equation

[SH2:1].[C:2]([C:4]1[CH:5]=[CH:6][C:7]([O:10][CH2:11][CH2:12][CH2:13][O:14][C:15]2[CH:16]=[C:17]3[C:21](=[CH:22][CH:23]=2)[N:20]([CH:24]([CH3:29])[C:25]([O:27][CH3:28])=[O:26])[CH:19]=[CH:18]3)=[N:8][CH:9]=1)#[N:3].C(NCC)C>CN(C=O)C>[NH2:3][C:2]([C:4]1[CH:5]=[CH:6][C:7]([O:10][CH2:11][CH2:12][CH2:13][O:14][C:15]2[CH:16]=[C:17]3[C:21](=[CH:22][CH:23]=2)[N:20]([CH:24]([CH3:29])[C:25]([O:27][CH3:28])=[O:26])[CH:19]=[CH:18]3)=[N:8][CH:9]=1)=[S:1]

Participants

Conditions

Temperature: 60 °C

Procedure

H2S gas was passed slowly through a solution of methyl 2-(5-{3-[5-cyano-2-pyridinyl)oxy]propoxy}-1H-indol-1-yl)propanoate (Example 67, 0.50 g, 1.32 mmol) in DMF (7.80 mL) for 20 minutes at rt. Diethylamine (0.21 mL, 2.37 mmol) was added in one portion, and the resultant light green solution was heated at 60° C. for 3 h. The reaction mixture was purged with a stream of argon, and then concentrated under reduced pressure. The desired compound (0.49 g, 90%) was isolated by column chromatography (50% hexanes in EtOAc) as a bright yellow solid. 1H NMR (400 MHz, CD2Cl2) δ 8.63 (dd, 1H), 8.16 (dd, 1H), 7.25-7.08 (m, 3H), 6.86-6.74 (m, 2H), 6.46 (d, 1H), 5.16 (qt, 1H), 4.59 (t, 2H), 4.17 (t, 2H), 3.71 (s, 3H), 2.35-2.25 (m, 2H), 1.82 (d, 3H).

Workup

customfor 20 minutes
customat rt
customThe reaction mixture was purged with a stream of argon
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-a1c6298eb7d848d6b764eecf309b57f9
Source dataset: uspto-grants-2011_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07964622B2

Reaction notes

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