Morpholine → 3-Chloro-1-morpholin-4-yl-5,6,8a,9-tetrahydro-8H-7,10-dioxa-2,4,4b-triaza-phenanthrene

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Reaction Conditions

Reaction Steps

A mixture of 1,3-dichloro-5,6,8a,9-tetrahydro-8H-7,10-dioxa-2,4,4b-triaza-phenanthrene (100 mg, 0.38 mmol), morpholine (80 μL, 0.92 mmol) and triethylamine (70 μL, 0.50 mmol) in IMS (5 mL) was heated at 140° C. for 25 mins in a microwave reactor, then concentrated in vacuo. The resulting residue was purified by column chromatography (SiO2, 0 to 10 to 15 to 25% ethyl acetate in pentane) affording 3-Chloro-1-morpholin-4-yl-5,6,8a,9-tetrahydro-8H-7,10-dioxa-2,4,4b-triaza-phenanthrene (45 mg, 38%). LCMS (method A): RT=2.92 min, [M+H]+=313. 1H NMR (400 MHz, CDCl3): δ 4.37 (1H, dd, J=13.2, 3.0 Hz), 4.19 (1H, dd, J=10.8, 3.3 Hz), 3.99 (1H, dd, J=11.1, 3.9 Hz), 3.88 (1H, dd, J=10.8, 3.2 Hz), 3.80 (dd, J=11.1, 8.4 Hz), 3.75 (4H, m), 3.66-3.53 (6H, m), 3.24 (1H, t, J=11.1 Hz), 3.00 (1H, m).

Provenance & Evidence