2-Chloropyrimidine → HCID 11372399, compound

HRID 898321Notes

Reaction equation

[Br:1][C:2]1[CH:3]=[C:4]2[C:12](=[CH:13][CH:14]=1)[NH:11][C:10]1[CH:9]([NH2:15])[CH2:8][CH2:7][CH2:6][C:5]2=1.Cl[C:17]1[N:22]=[CH:21][CH:20]=[CH:19][N:18]=1>CN(C)C=O.C(OCC)(=O)C>[Br:1][C:2]1[CH:3]=[C:4]2[C:12](=[CH:13][CH:14]=1)[NH:11][C:10]1[CH:9]([NH:15][C:17]3[N:22]=[CH:21][CH:20]=[CH:19][N:18]=3)[CH2:8][CH2:7][CH2:6][C:5]2=1

Participants

Conditions

Temperature: 150 °C

Procedure

A solution of 6-bromo-2,3,4,9-tetrahydro-1H-carbazol-1-amine (43 mg, 0.16 mmol) and 2-chloropyrimidine (56 mg, 0.49 mmol) in N,N-dimethylformamide (1.0 mL) was sealed in a microwave vial and heated by a Smith Synthesizer microwave at 150° C. for 15 minutes. The mixture was diluted with ethyl acetate (10 mL) and washed with water (2×10 mL). The organic phase was concentrated and purified by flash column chromatography on silica (20% to 50% gradient of ethyl acetate/hexanes) to provide 6-bromo-N-pyrimidin-2-yl-2,3,4,9-tetrahydro-1H-carbazol-1-amine. The amine was diluted with diethyl ether (3 mL) and hydrogen chloride (1.0 M in diethyl ether) was added. The suspension was concentrated, diluted with acetonitrile and water, frozen and lyophilized to provide 6-bromo-N-pyrimidin-2-yl-2,3,4,9-tetrahydro-1H-carbazol-1-amine hydrochloride (16 mg, 26%) as a yellow solid. 1H-NMR (DMSO-d6): δ 10.94 (s, 1H), 8.44-8.39 (m, 2H), 8.03-7.96 (m, 1H), 7.55 (s, 1H), 7.23 (d, 1H), 7.12 (d, 1H), 6.72 (t, 1H), 5.37-5.32 (m, 1H), 2.63-2.59 (m, 2H), 2.09-1.95 (m, 2H), 1.87-1.75 (m, 2H); MS m/z (M−1) 341, 343.

Workup

washwashed with water (2×10 mL)
concentrationThe organic phase was concentrated
custompurified by flash column chromatography on silica (20% to 50% gradient of ethyl acetate/hexanes)

Sources & evidence

ORD record: ord-b430ad611ab54d2ca129543073828cae
Source dataset: uspto-grants-2008_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07351733B2

Reaction notes

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