Sodium hydride → Methyl 4-chloro-1-{2-[4-(trifluoromethoxy)phenoxy]ethyl}-1H-pyrrolo[3,2-c]pyridine-2-carboxylate

HRID 513194Notes

Reaction equation

[Cl:1][C:2]1[C:7]2[CH:8]=[C:9]([C:11]([O:13][CH3:14])=[O:12])[NH:10][C:6]=2[CH:5]=[CH:4][N:3]=1.[H-].[Na+].Br[CH2:18][CH2:19][O:20][C:21]1[CH:26]=[CH:25][C:24]([O:27][C:28]([F:31])([F:30])[F:29])=[CH:23][CH:22]=1>CN(C=O)C.O>[Cl:1][C:2]1[C:7]2[CH:8]=[C:9]([C:11]([O:13][CH3:14])=[O:12])[N:10]([CH2:18][CH2:19][O:20][C:21]3[CH:22]=[CH:23][C:24]([O:27][C:28]([F:29])([F:30])[F:31])=[CH:25][CH:26]=3)[C:6]=2[CH:5]=[CH:4][N:3]=1

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of Methyl 4-chloro-1H-pyrrolo[3,2-c]pyridine-2-carboxylate (350 mg, 1.662 mmole) in DMF (6 mL) was added NaH (60% dispersion in mineral oil, 86 mg, 2.160 mmole) portionwise at RT. After gas evolution had ceased a solution of 1-(2-bromoethoxy)-4-(trifluoromethoxy)benzene (616 mg, 2.160 mmole) in DMF (1 mL) was added. After the addition was complete the mixture was heated to 60° C. After 4 hr the mixture was cooled to RT. The mixture was diluted with water and extracted with EtOAc (3×). The combined organic layers were washed with H2O and brine, dried (MgSO4), filtered, and concentrated. Flash column (Biotage-SNAP-25 g SiO2, 30% EtOAc/hexanes) gave the title compound (492 mg, 71%) as a white solid. 1H NMR (400 MHz, CDCl3): δ 8.21 (d, J=6.0 Hz, 1 H); 7.45 (s, 1 H); 7.42 (d, J=6.0 Hz, 1 H); 7.07 (d, J=8.6 Hz, 2 H); 6.76-6.70 (m, 2 H); 4.93 (t, J=5.13 Hz, 2 H); 4.34 (t, J=5.0 Hz, 3 H); 3.95 (s, 3 H).

Workup

additionwas added
additionAfter the addition
temperatureAfter 4 hr the mixture was cooled to RT
extractionextracted with EtOAc (3×)
washThe combined organic layers were washed with H2O and brine
dry with materialdried (MgSO4)
filtrationfiltered
concentrationconcentrated

Sources & evidence

ORD record: ord-f78606f5918345cb88f4b3f44254f4c6
Source dataset: uspto-grants-2015_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09102673B2

Reaction notes

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