Pyrimidine, 2,4-dichloro-5-methyl- → 1-(2-((2-Chloro-5-methylpyrimidin-4-yl)ethynyl)phenyl)cyclopropanecarboxamide

HRID 592433Notes

Reaction equation

[C:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1([C:12]([NH2:14])=[O:13])[CH2:11][CH2:10]1)#[CH:2].[Cl:15][C:16]1[N:21]=[C:20](Cl)[C:19]([CH3:23])=[CH:18][N:17]=1>O1CCOCC1.[Cu]I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[Cl:15][C:16]1[N:21]=[C:20]([C:2]#[C:1][C:3]2[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=2[C:9]2([C:12]([NH2:14])=[O:13])[CH2:11][CH2:10]2)[C:19]([CH3:23])=[CH:18][N:17]=1

Participants

Conditions

Temperature: 70 °C

Procedure

A mixture of 1-(2-ethynylphenyl)cyclopropanecarboxamide K6 (2.29 g, 12.4 mmol), 2,4-dichloro-5-methylpyrimidine (2.62 g, 16.1 mmol), CuI (0.047 g, 0.25 mmol) and PdCl2(PPh3)2 (0.087 g, 0.12 mmol) in dioxane (25 mL) was bubbled with N2 for 10 minutes. Et3N (10 mL) was added and the mixture was stirred under nitrogen at 70° C. for 1 hour. The reaction mixture was cooled and adsorbed onto silica. Purification by column chromatography (Biotage Isolera, 120 g SiO2, 0-10% MeOH in CHCl3) gave the title compound A39 as a yellow oil (1.85 g, 48%). LCMS-D: rt 3.24 min; m/z 312 [M+H]+.

Workup

customwas bubbled with N2 for 10 minutes
additionEt3N (10 mL) was added
temperatureThe reaction mixture was cooled
customPurification by column chromatography (Biotage Isolera, 120 g SiO2, 0-10% MeOH in CHCl3)

Sources & evidence

ORD record: ord-a3d6234abfbe40be84b48befb5e708ff
Source dataset: uspto-grants-2016_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09238644B2

Reaction notes

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