Water → HCID 57705619, compound

HRID 1662477Notes

Reaction equation

[F:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[C:10]1[CH:15]=[CH:14][C:13]([C:16]([OH:18])=[O:17])=[CH:12][C:11]=1[N:19]1[CH2:24][CH2:23][CH2:22][CH2:21][C:20]1=O.O>C1COCC1>[F:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[C:10]1[CH:15]=[CH:14][C:13]([C:16]([OH:18])=[O:17])=[CH:12][C:11]=1[N:19]1[CH2:24][CH2:23][CH2:22][CH2:21][CH2:20]1

Participants

Conditions

Temperature: 0 °C

Procedure

To a cooled solution of 67.20B (0.4401 g, 1.282 mmol) in dry THF (8 mL) at 0° C. was added borane THF complex, 1.0 M in THF (2.5 mL, 2.5 mmol) dropwise. Upon complete addition, the reaction was maintained at 0° C. and monitored by TLC and LCMS. After 3 hours, water was added to quench the reaction, and the resulting solution was extracted three times with EtOAc. The organic extractions were combined and washed successively with saturated aqueous sodium bicarbonate, water, and then brine. After drying over anhydrous magnesium sulfate, filtration, and concentration, the residue was purified with silica gel flash chromatography (0-25% MeOH in DCM) to afford 67.20C as an oil (292.9 mg, 69% yield). 1H NMR (400 MHz, CDCl3) δ ppm 7.85 (2H, m), 7.36 (1H, d, J=7.8 Hz), 7.11 (2H, m), 6.86 (1H, dt, J=8.9, 3.6 Hz), 3.83 (3H, s), 2.85 (4H, m), 1.46 (6H, m).

Workup

additionUpon complete addition
customto quench
customthe reaction
extractionthe resulting solution was extracted three times with EtOAc
extractionThe organic extractions
washwashed successively with saturated aqueous sodium bicarbonate, water
dry with materialAfter drying over anhydrous magnesium sulfate, filtration, and concentration
customthe residue was purified with silica gel flash chromatography (0-25% MeOH in DCM)

Sources & evidence

ORD record: ord-2b647afeb0ea46728691b576d7c24a44
Source dataset: uspto-grants-2011_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08030354B2

Reaction notes

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