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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2039672Generated: November 1, 2026

Diisopropylethylamine → HCID 23634343, compound

https://huagongshe.com/reaction/2039672

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiisopropylethylamineHCID 81531—
ReactantTriphosgeneHCID 94429—
Reactant4-Amino-6-(tert-butyl)pyrimidineHCID 713744—
Reactant4-(4-Amino-3-fluorophenoxy)-N-methylpyridine-2-carboxamideHCID 46835219—
SolventDimethylformamideHCID 6228—
SolventTetrahydrofuranHCID 8028—
ProductHCID 23634343HCID 2363434363.9%

Reaction Conditions

Temperature70 °C

Reaction Steps

A solution of 6-amino-4-t-butylpyrimidine (20.0 mg; 0.13 mmol), triphosgene (14.52 mg; 0.05 mmol) and diisopropylethylamine (20.51 mg; 0.16 mmol) in THF (0.7 mL) was heated at 70° C. for 4 h. A solution of 4-(4-amino-3-fluoro-phenoxy)-pyridine-2-carboxylic acid methylamide (34.5 mg; 0.13 mmol) in DMF (1.5 mL) was then added and the reaction mixture was heated at 70° C. for another 8 h, then extracted between EtOAc and saturated aqueous NaHCO3. The organic layer was dried and evaporated under reduced pressure to give a crude oil that was purified via HPLC to give the title compound (14 mg, 9%). 1H-NMR (CD3OD) δ 8.73 (s, 1H), 8.48 (d, J=4.0 Hz, 1H), 8.29 (t, J=4.0 Hz, 1H), 7.57 (d, J=4.0 Hz, 1H), 7.58-7.08 (m, 3H), 7.01 (s, 1H), 2.94 (s, 3H), 1.36 (s, 9H). LC-MS m/z 439 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08580798B2
Source datasetuspto-grants-2013_11
ORD IDord-fc7ca586a3ff47dc839b366b97e387d5
Source noteuspto-grants-2013_11