Dimethylformamide → HCID 59454904, compound

HRID 1401720Notes

Reaction equation

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

Participants

Conditions

Temperature: 0 °C

Procedure

1-(1,2,3,4-Tetrahydro-2,8-dimethylpyrido[4,3-b]indol-5-yl)-3-methyl-2-(pyridin-4-yl)butan-2-ol (0.2 g, 0.55 mmol) was dissolved in dry DCM and a drop of DMF was added. The solution was cooled to 0° C. and thionyl chloride (0.194 g, 1.65 mmoL) dissolved in dry DCM (1 mL) was added. Stirring was continued for 1 h at 0° C. and for 2 h at RT. Volatiles were removed under reduced pressure, the residue was basified with saturated aqueous sodium bicarbonate, and the product was extracted with EtOAc (3×50 mL). The combined organic layers were dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by reverse phase HPLC. 1H NMR (CD3OD, TFA salt) δ (ppm): 8.42 (d, 2H), 7.50 (d, 2H), 7.12 (s, 1H), 7.10 (d, 1H), 6.90 (d, 1H), 5.22 (d, 2H), 4.60 (d, 1H), 4.22 (d, 1H), 3.82 (m, 1H), 3.50 (m, 1H), 3.16 (m, 2H), 3.05 (s, 3H), 2.38 (s, 3H), 2.20 (s, 3H), 1.65 (s, 3H).

Workup

additionwas added
customVolatiles were removed under reduced pressure
extractionthe product was extracted with EtOAc (3×50 mL)
dry with materialThe combined organic layers were dried over anhydrous sodium sulfate
concentrationconcentrated under reduced pressure
customThe residue was purified by reverse phase HPLC

Sources & evidence

ORD record: ord-257d36899ce449ba903c5a7f18a55880
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08907097B2

Reaction notes

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