Trifluoroacetic acid → 3-(4-Benzyloxy-2-fluoro-5-methoxy-benzyl)-1H-pyrrolo[2,3-b]pyridine

HRID 253418Notes

Reaction equation

[CH2:1]([O:8][C:9]1[C:14]([O:15][CH3:16])=[CH:13][C:12]([CH:17]([C:19]2[C:27]3[C:22](=[N:23][CH:24]=[CH:25][CH:26]=3)[N:21]([Si](C(C)C)(C(C)C)C(C)C)[CH:20]=2)O)=[C:11]([F:38])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.FC(F)(F)C(O)=O.C([SiH](CC)CC)C>C(#N)C>[CH2:1]([O:8][C:9]1[C:14]([O:15][CH3:16])=[CH:13][C:12]([CH2:17][C:19]2[C:27]3[C:22](=[N:23][CH:24]=[CH:25][CH:26]=3)[NH:21][CH:20]=2)=[C:11]([F:38])[CH:10]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

Conditions

Temperature: 80 °C

Procedure

(4-Benzyloxy-2-fluoro-5-methoxy-phenyl)-(1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-methanol (84, 1.49 g, 2.79 mmol) was dissolved in acetonitrile (50 mL) and trifluoroacetic Acid (1.1 mL) was added. The reaction was stirred for 5 minutes. Triethylsilane (2.2 mL) was added to the reaction. The reaction was heated at 80° C. for 6 hours. The reaction was concentrated and the crude material was dissolved into ethyl acetate and washed with 1 N HCl, saturated sodium bicarbonate, and brine. The organic portion was dried over anhydrous sodium sulfate and concentrated. The solid obtained was used in the next reaction without further purification (85, 833 mg, 83%). MS (ESI) [M+H+]+=363.4.

Workup

concentrationThe reaction was concentrated
dissolutionthe crude material was dissolved into ethyl acetate
washwashed with 1 N HCl, saturated sodium bicarbonate, and brine
dry with materialThe organic portion was dried over anhydrous sodium sulfate
concentrationconcentrated
customThe solid obtained
customwas used in the next reaction without further purification (85, 833 mg, 83%)

Sources & evidence

ORD record: ord-8db3a5d17c43413fb15f144ba9628289
Source dataset: uspto-grants-2011_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07872018B2

Reaction notes

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