Potassium Phosphate, Tribasic → (3-Fluoro-4-(2-methylpyridin-4-yl)phenyl)methanamine

HRID 711225Notes

Reaction equation

[CH3:1][C:2]1[CH:7]=[C:6](B(O)O)[CH:5]=[CH:4][N:3]=1.Cl[C:12]1[CH:17]=[CH:16][C:15]([CH2:18][NH2:19])=[CH:14][C:13]=1[F:20].[O-]P([O-])([O-])=O.[K+].[K+].[K+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:20][C:13]1[CH:14]=[C:15]([CH2:18][NH2:19])[CH:16]=[CH:17][C:12]=1[C:6]1[CH:5]=[CH:4][N:3]=[C:2]([CH3:1])[CH:7]=1

Participants

Conditions

Temperature: 96 °C

Procedure

A mixture of (2-methylpyridin-4-yl)boronic acid 15-1 (822 mg, 6.2 mmol), (4-chloro-3-fluorophenyl)methanamine 15-2 (798 mg, 5.00 mmol), Pd(PPh3)4 (173 mg, 0.15 mmol) and K3PO4 (1.59 g, 7.50 mmol) in dioxane (10 mL) and water (1 mL) was stirred at 96° C. under argon overnight. After cooling to room temperature, the mixture was filtered through celite, washed with ethyl acetate, and dried with Na2SO4. The filtrate was concentrated by rotavap and the residue subjected to silica gel column chromatography with 6% ammonia-saturated methanol in dichloromethane as eluent to give (3-fluoro-4-(2-methylpyridin-4-yl)phenyl)methanamine 15-3 as an oil.

Workup

temperatureAfter cooling to room temperature
filtrationthe mixture was filtered through celite
washwashed with ethyl acetate
dry with materialdried with Na2SO4
concentrationThe filtrate was concentrated by rotavap

Sources & evidence

ORD record: ord-002187d7f03e4e508b10ceadff063090
Source dataset: uspto-grants-2015_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09181235B2

Reaction notes

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