Triphenylphosphine → N-{3-[2-(bromomethyl)-1,3-thiazol-5-yl]-5-methylphenyl}-4-(trifluoromethyl)pyrimidin-2-amine

HRID 1040116Notes

Reaction equation

[CH3:1][C:2]1[CH:3]=[C:4]([C:19]2[S:23][C:22]([CH2:24]O)=[N:21][CH:20]=2)[CH:5]=[C:6]([NH:8][C:9]2[N:14]=[C:13]([C:15]([F:18])([F:17])[F:16])[CH:12]=[CH:11][N:10]=2)[CH:7]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1C(=O)N([Br:52])C(=O)C1>ClCCl>[Br:52][CH2:24][C:22]1[S:23][C:19]([C:4]2[CH:5]=[C:6]([NH:8][C:9]3[N:14]=[C:13]([C:15]([F:18])([F:17])[F:16])[CH:12]=[CH:11][N:10]=3)[CH:7]=[C:2]([CH3:1])[CH:3]=2)=[CH:20][N:21]=1

Participants

Conditions

Temperature: 0 °C

Procedure

To [5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]methanol (0.13 g, 0.34 mmol) was added dichloromethane (3.5 mL) and triphenylphosphine (0.11 g, 0.41 mmol). The solution was cooled to 0° C. and n-bromosuccinimide (0.067 g, 0.38 mmol) was added and the reaction was allowed to warm slowly to room temperature. Once the reaction was complete, silica gel (1.3 g) was added and the slurry was concentrated. The solid was purified by silica gel chromatography to yield N-{3-[2-(bromomethyl)-1,3-thiazol-5-yl]-5-methylphenyl}-4-(trifluoromethyl)pyrimidin-2-amine (0.072 g, 49%). MS ESI: [M+H]+ m/z 430.9. 1H NMR (500 MHz, DMSO-d6) δ 10.29 (s, 1H), 8.84 (d, J=4.9, 1H), 8.07 (s, 1H), 7.99 (s, 1H), 7.49 (s, 1H), 7.29 (d, J=4.9, 1H), 7.21 (s, 1H), 5.04 (s, 2H), 2.32 (s, 3H). rhSYK activity=+++

Workup

temperatureto warm slowly to room temperature
additionsilica gel (1.3 g) was added
concentrationthe slurry was concentrated
customThe solid was purified by silica gel chromatography

Sources & evidence

ORD record: ord-87525cfaec3b4b5082591887d5e4b255
Source dataset: uspto-grants-2013_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08551984B2

Reaction notes

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