1-Propanol → 4-(2-Chloro-4-pyrimidinyl)-N-(cyanomethyl)benzamide

HRID 449806Notes

Reaction equation

[Cl:1][C:2]1[N:7]=[C:6](Cl)[CH:5]=[CH:4][N:3]=1.[C:9]([CH2:11][NH:12][C:13]([C:15]1[CH:20]=[CH:19][C:18](B(O)O)=[CH:17][CH:16]=1)=[O:14])#[N:10].C(O)CC.C(=O)(O)[O-].[Na+]>C1(C)C=CC=CC=1>[Cl:1][C:2]1[N:7]=[C:6]([C:18]2[CH:19]=[CH:20][C:15]([C:13]([NH:12][CH2:11][C:9]#[N:10])=[O:14])=[CH:16][CH:17]=2)[CH:5]=[CH:4][N:3]=1

Participants

Conditions

Temperature: 90 °C

Procedure

To a solution of 2,4-dichloropyrimidine (3.2 g, 0.22 mmol) and 4-(cyanomethylcarbamoyl)phenylboronic acid (3.0 g, 15 mmol) in toluene (146 mL) were added n-propanol (44 mL), aqueous sodium bicarbonate (2M, 22 mL) and tetrakis(triphenylphosphine)palladium[0] (850 mg, 0.7 mmol). The reaction was heated at 90° C. for 24 h, then partitioned between ethyl acetate and water. The aqueous layer was extracted twice further with ethyl acetate and the combined organic fractions washed with brine, dried (Na2SO4) filtered and concentrated. Silica gel chromatography using 30-70% ethyl acetate/petroleum spirit as eluent provided 4-(2-chloropyrimidin-4-yl)-N-(cyanomethyl)benzamide as a pale yellow waxy solid (1.35 g, 33%). 1H NMR (300 MHz, d6-DMSO) δ 9.40 (t, J=5.4 Hz, 1H), 8.88 (d, J=5.2 Hz, 1H), 8.32 (d, J=8.7 Hz, 2H), 8.23 (d, J=5.1 Hz, 1H), 8.05 (d, J=8.7 Hz, 2H), 4.36 (d, J=5.4 Hz, 2H); LC-ESI-MS (method B): rt 5.3 min.; m/z 273.2/275.2 [M+H]+.

Workup

custompartitioned between ethyl acetate and water
extractionThe aqueous layer was extracted twice further with ethyl acetate
washthe combined organic fractions washed with brine
dry with materialdried (Na2SO4)
filtrationfiltered
concentrationconcentrated

Sources & evidence

ORD record: ord-f0ba9e4ad70b4176ad70ad0c78106e7b
Source dataset: uspto-grants-2013_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08486941B2

Reaction notes

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