Potassium Carbonate → 2-(4-Benzyloxycarbonyl-2-methoxy-phenylamino)-4-chloro-5-trifluoromethyl-pyrimidine

HRID 388359Notes

Reaction equation

[NH2:1][C:2]1[CH:17]=[CH:16][C:5]([C:6]([O:8][CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[O:7])=[CH:4][C:3]=1[O:18][CH3:19].C([O-])([O-])=O.[K+].[K+].Cl[C:27]1[N:32]=[C:31]([Cl:33])[C:30]([C:34]([F:37])([F:36])[F:35])=[CH:29][N:28]=1>O1CCOCC1>[Cl:33][C:31]1[C:30]([C:34]([F:36])([F:35])[F:37])=[CH:29][N:28]=[C:27]([NH:1][C:2]2[CH:17]=[CH:16][C:5]([C:6]([O:8][CH2:9][C:10]3[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=3)=[O:7])=[CH:4][C:3]=2[O:18][CH3:19])[N:32]=1

Participants

Conditions

Temperature: 130 °C

Procedure

Benzyl 4-amino-3-methoxybenzoate (1.92 g, 6.8 mmol) and K2CO3 (2.38 g, 17 mmol) are suspended in 4 mL dioxane and then combined with 2,4-dichloro-5-trifluoromethylpyrimidine (1.48 mL, 6.8 mmol). The suspension is then refluxed with stirring in the oil bath (approx. 130° C.) for 100 min. After the reaction has ended the reaction mixture is filtered, the filtrate is concentrated by rotary evaporation and purified by normal phase column chromatography. The product-containing fractions of A-3a (HPLC-MS: tRet.=1.94 min; MS (M−H)+=436) are combined and concentrated by rotary evaporation.

Workup

temperatureThe suspension is then refluxed
filtrationis filtered
concentrationthe filtrate is concentrated by rotary evaporation
custompurified by normal phase column chromatography
customThe product-containing fractions of A-3a (HPLC-MS: tRet.=1.94 min; MS (M−H)+=436)
concentrationconcentrated by rotary evaporation

Sources & evidence

ORD record: ord-f659813d53634300a1ad547bd10b4da2
Source dataset: uspto-grants-2013_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08377943B2

Reaction notes

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