Sodium Carbonate → 5-(7-Cyclopropyl-4-morpholino-6,7-dihydro-[1,4]dioxino[2,3-d]pyrimidin-2-yl)pyrimidin-2-amine

温度

120 °C

A microwave vial was charged with 2-chloro-7-cyclopropyl-4-morpholin-4-yl-6,7-dihydro-[1,4]dioxino[2,3-d]pyrimidine (205 mg, 0.49 mmol), 5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-pyrimidin-2-ylamine (324 mg, 1.47 mmol), Pd(PPh3)2Cl2 (51 mg, 0.07 mmol), sodium carbonate (2.41 mL, 2.41 mmol, 1M aqueous solution) and acetonitrile (2.5 mL). The vessel was sealed then evacuated and back filled with argon (×3) before being heated at 120° C. for 30 minutes using microwave irradiation. The reaction mixture was filtered and the filtrate concentrated in vacuo. The resultant residue was purified by column chromatography (SiO2, gradient 0-4% methanol in DCM), then triturated in diethyl ether/pentane. The resulting residue was purified by reverse phase HPLC (Phenomenex Gemini 5 μm C18, 0.1% HCO2H in water on a gradient methanol 10-98%) affording 118 as an off white solid (4.5 mg, 3%). LCMS: RT=3.52 min, [M+H]+=357. 1H NMR (400 MHz, DMSO-d6): δ 8.91 (2H, s), 7.01 (2H, s), 4.40 (1H, dd, J=11.38, 2.41 Hz), 4.01 (1H, dd, J=11.41, 7.52 Hz), 3.80-3.60 (9H, m), 1.11-0.98 (1H, m), 0.69-0.41 (4H, m).

1. customThe vessel was sealed
2. customthen evacuated
3. additionback filled with argon (×3)
4. custommicrowave irradiation
5. filtrationThe reaction mixture was filtered
6. concentrationthe filtrate concentrated in vacuo
7. customThe resultant residue was purified by column chromatography (SiO2, gradient 0-4% methanol in DCM)
8. customtriturated in diethyl ether/pentane
9. customThe resulting residue was purified by reverse phase HPLC (Phenomenex Gemini 5 μm C18, 0.1% HCO2H in water on a gradient methanol 10-98%)

ORDレコード

ord-bcdafc3ea4e74647a9c08e26fb2b060b

出典データセット

uspto-grants-2016_05

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US09346817B2