2-Butanone, 3-bromo- → ethyl [(1S)-5-(3-{[5-(4,5-dimethyl-1,3-thiazol-2-yl)-2-pyridinyl]oxy}propoxy)-2,3-dihydro-1H-inden-1-yl]acetate

HRID 603450Notes

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)[C@H:20]([CH2:24][C:25]([O:27][CH2:28][CH3:29])=[O:26])[CH2:19][CH2:18]3)=[N:8][CH:9]=1)=[S:3].Br[CH:31]([CH3:35])[C:32](=O)[CH3:33]>C(O)C>[CH3:35][C:31]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)[C@H:20]([CH2:24][C:25]([O:27][CH2:28][CH3:29])=[O:26])[CH2:19][CH2:18]4)=[N:8][CH:9]=2)[S:3][C:32]=1[CH3:33]

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of ethyl [(1S)-5-(3-{[5-(aminocarbonothioyl)-2-pyridinyl]oxy}propoxy)-2,3-dihydro-1H-inden-1-yl]acetate (Example 259, 90 mg, 0.22 mmol) and 3-bromo-2-butanone (40 mg, 0.26 mmol) in ethanol (9 mL) was heated under argon at 80° C. for 18 h, and then concentrated under reduced pressure. The product (85 mg, 84%) was isolated after purification by silica gel chromatography (2:1 hexanes/EtOAc). 1H NMR (400 MHz, CD2Cl2) δ 8.54 (dd, 1H), 8.05 (dd, 1H), 7.02 (d, 1H), 6.83 (d, 1H), 6.78 (d, 1H), 6.69 (dd, 1H), 4.51 (t, 2H), 4.18-4.10 (m, 4H), 3.48 (qt, 1H), 2.92-2.75 (m, 2H), 2.69 (dd, 1H), 2.42-2.30 (m, 8H), 2.29-2.20 (m, 2H), 1.80-1.68 (m, 1H), 1.27 (t, 3H).

Workup

concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-d0c05be4baae4fc19575f6488cdc53de
Source dataset: uspto-grants-2011_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07906653B2

Reaction notes

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