1-Bromo-2-butanone → methyl 2-[5-(3-{[5-(4-ethyl-1,3-thiazol-2-yl)-2-pyridinyl]oxy}propoxy)-1H-indol-1-yl]propanoate

HRID 734430Notes

Reaction equation

[NH2:1][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)=[S:3].Br[CH2:31][C:32](=O)[CH2:33][CH3:34]>C(O)C>[CH2:33]([C:32]1[N:1]=[C:2]([C:4]2[CH:5]=[CH:6][C:7]([O:10][CH2:11][CH2:12][CH2:13][O:14][C:15]3[CH:16]=[C:17]4[C:21](=[CH:22][CH:23]=3)[N:20]([CH:24]([CH3:29])[C:25]([O:27][CH3:28])=[O:26])[CH:19]=[CH:18]4)=[N:8][CH:9]=2)[S:3][CH:31]=1)[CH3:34]

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of methyl 2-[5-(3-{[5-(aminocarbonothioyl)-2-pyridinyl]oxy}propoxy)-1H-indol-1-yl]propanoate (Example 68, 0.1 g, 0.24 mmol) and 1-bromo-2-butanone (0.05 g, 0.29 mmol) in ethanol (8.90 mL) was heated under argon at 80° C. for 3 h. The resulting mixture was concentrated. The title compound (0.11 g, 98%) was isolated by column chromatography (2:1 hexanes/EtOAc). 1H NMR (400 MHz, CD2Cl2) δ 8.69 (dd, 1H), 8.13 (dd, 1H), 7.25-7.10 (m, 3H), 6.90-6.81 (m, 3H), 6.47 (d, 1H), 5.12 (qt, 1H), 4.58 (t, 2H), 4.20 (t, 2H), 3.71 (s, 3H), 2.85 (qt, 2H), 2.36-2.24 (m, 2H), 1.82 (d, 3H), 1.35 (t, 3H).

Workup

concentrationThe resulting mixture was concentrated

Sources & evidence

ORD record: ord-d6e13057f82e4f5181f2a2bb16e6bf64
Source dataset: uspto-grants-2009_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07592361B2

Reaction notes

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