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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 971244Generated: October 29, 2026

Cesium carbonate → 7-(m-Tolyl)-N-(4-(trifluoromethyl)phenyl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-amine

https://huagongshe.com/reaction/971244

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCesium carbonateHCID 10796—
Reactant3-BromotolueneHCID 11560—
ReactantBinap, (A+-)-HCID 634876—
Reactant(5,6,7,8-Tetrahydro-pyrido[3,4-d]pyrimidin-4-yl)-(4-trifluoromethylphenyl)amineHCID 59021462—
Catalystpalladium(II) acetateHCID 167845—
Solvent1,4-DioxaneHCID 31275—
Product7-(m-Tolyl)-N-(4-(trifluoromethyl)phenyl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-amineHCID 1200400817.3%

Reaction Conditions

Temperature160 °C

Reaction Steps

To 2 mL of dioxane was added 10 mol % of palladium(II)acetate (12 mg) and 20 mol % rac-BINAP (58 mg). After stirring for 3 hours, 3-bromotoluene (0.064 ml, 0.53 mmol), cesium carbonate (682 mg, 2.12 mmol), N-(4-(Trifluoromethyl)phenyl)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-amine (150 mg, 0.51 mmol) and activated molecular sieves (340 mg) were added. The mixture was sonicated for 10 minutes and heated in a sealed tube via microwave at 160° C. for 3 hours in a Personal Chemistry Microwave (Smith Creator). After completion, the mixture was filtered through celite, evaporated and purified by flash chromatography over silica gel using a 0-100% gradient of ethyl acetate/hexanes to give the desired product as a white solid (34 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07312330B2
Source datasetuspto-grants-2007_12
ORD IDord-44a660a3926342ee8f96a0c3033c951d
Source noteuspto-grants-2007_12