Sodium hydride → ethyl 7-(11-oxodibenzo[b,f][1,4]thiazepin-10(11H)-yl)heptanoate

HRID 1946626Notes

Reaction equation

[CH:1]1[C:6]2[C:7](=[O:16])[NH:8][C:9]3[CH:15]=[CH:14][CH:13]=[CH:12][C:10]=3[S:11][C:5]=2[CH:4]=[CH:3][CH:2]=1.[H-].[Na+].Br[CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][C:26]([O:28][CH2:29][CH3:30])=[O:27]>CN(C=O)C>[O:16]=[C:7]1[C:6]2[CH:1]=[CH:2][CH:3]=[CH:4][C:5]=2[S:11][C:10]2[CH:12]=[CH:13][CH:14]=[CH:15][C:9]=2[N:8]1[CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][C:26]([O:28][CH2:29][CH3:30])=[O:27]

Participants

Conditions

Temperature: 50 °C

Procedure

Title compound 409 (0.403 g, 1.77 mmol) was dissolved in DMF (5.0 mL) and sodium hydride (60% in oil, 0.0.086 g, 2.13 mmol) was added. The reaction mixture was stirred at 50° C. for 30 minutes. Ethyl 7-bromoheptanoate (0.631 g, 2.66 mmol) was added and the reaction mixture was stirred at 50° C. for 16 hours. The mixture was cooled down to room temperature and quenched with water. The aqueous layer was extrated 3 times with at mixture of 75% ethyl acetate in hexanes. The combined organic extracts were washed with water and brine, dried over sodium sulfate, filtered and evaporated. The residue was purified by flash chromatography (30% ethyl acetate in hexanes) to afford title compound 410 (470 mg, 69%). MS (m/z): 384.4 (M+H).

Workup

stirringthe reaction mixture was stirred at 50° C. for 16 hours
temperatureThe mixture was cooled down to room temperature
customquenched with water
additionwith at mixture of 75% ethyl acetate in hexanes
washThe combined organic extracts were washed with water and brine
dry with materialdried over sodium sulfate
filtrationfiltered
customevaporated
customThe residue was purified by flash chromatography (30% ethyl acetate in hexanes)

Sources & evidence

ORD record: ord-01ce9a6799b840d4b8a91e51c9aa4276
Source dataset: uspto-grants-2013_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08399452B2

Reaction notes

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