C([Li])CCC.[Cl:6][C:7]1[C:8]2[CH2:15][C:14](=[O:16])[NH:13][C:9]=2[N:10]=[CH:11][N:12]=1.CN(C)CCN(C)C.Br[CH2:26][C:27]1[CH:32]=[CH:31][C:30]([N+:33]([O-:35])=[O:34])=[CH:29][C:28]=1[CH2:36]Br>C1COCC1>[Cl:6][C:7]1[C:8]2[C:15]3([CH2:36][C:28]4[C:27](=[CH:32][CH:31]=[C:30]([N+:33]([O-:35])=[O:34])[CH:29]=4)[CH2:26]3)[C:14](=[O:16])[NH:13][C:9]=2[N:10]=[CH:11][N:12]=1
Butyllithium (0.29 ml, 0.74 mmol, 2.5 M) was added to a stirred solution of 4-chloro-5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one from Step B (50 mg, 0.295 mmol) at −78° C. in THF (30 mL). After complete addition of butyllithium, N,N,N′,N′-tetramethylethane-1,2-diamine (0.31 mL, 0.77 mmol) was added. After 1 h at −78° C., 1,2-bis(bromomethyl)-4-nitrobenzene (91 mg, 0.295 mmol, described in Intermediate 2) was added and the reaction warmed to ambient temperature. After 8 h, the reaction was quenched with H2O and the mixture was partitioned between EtOAc and H2O. The aqueous solution was extracted with EtOAc (3×20 mL). The combined organic extracts were washed with brine (100 mL), dried over Na2SO4, filtered, and concentrated in vacuo to give the title compound. MS: m/z=317 (M+1).
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