Triethylamine → (11S)-11-Methyl-3-[(1E)-3-morpholin-4-yl-3-oxoprop-1-enyl]-10,11-dihydro-8H-[1,4]oxazino[4',3':1,2]imidazo[4,5-c]quinolin-6-amine

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A scintillation vial was charged with palladium acetate (22 mg, 0.10 mmol), tri-o-tolylphosphine (61 mg, 0.20 mmol), anhydrous DMF (1.0 mL) and triethylamine (0.4 mL, 3.0 mmol). The orange homogeneous solution was then added to a solution of (11S)-3-bromo-11-methyl-10,11-dihydro-8H-[1,4]oxazino[4′,3′:1,2]imidazo[4,5-c]quinolin-6-amine (333 mg, 1.00 mmol) dissolved in 10 mL of anhydrous DMF followed by the addition of a solution of 4-acryloylmorpholine (169 mg, 1.20 mmol) dissolved in 1.0 mL of anhydrous DMF. The mixture was transferred to a glass vessel and the vessel was purged with N2, sealed and heated to 120° C. for 18 hours. The reaction mixture was cooled and concentrated to dryness under reduced pressure to give a golden solid. The solid was treated with CH2Cl2 and saturated aqueous K2CO3 solution and the layers were separated. The organic layer was concentrated to dryness to give a light-brown solid. Chromatography (SiO2, 0-15% CMA/CHCl3) gave a tan solid that was crystallized from acetonitrile to give 250 mg of the title compound as beige crystals, mp>250° C.

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