Sodium Azide → HCID 71008052, compound

HRID 2408750Notes

Reaction equation

[CH3:1][C:2]1[CH:14]=[CH:13][C:12]2[N:11]([CH2:15][CH:16](OS(C)(=O)=O)[C:17]3[CH:22]=[N:21][CH:20]=[CH:19][N:18]=3)[C:10]3[CH2:9][CH2:8][N:7]4[CH2:28][CH2:29][CH2:30][CH:6]4[C:5]=3[C:4]=2[CH:3]=1.[N-:31]=[N+:32]=[N-:33].[Na+]>CN(C=O)C>[N:31]([CH:16]([C:17]1[CH:22]=[N:21][CH:20]=[CH:19][N:18]=1)[CH2:15][N:11]1[C:10]2[CH2:9][CH2:8][N:7]3[CH2:28][CH2:29][CH2:30][CH:6]3[C:5]=2[C:4]2[CH:3]=[C:2]([CH3:1])[CH:14]=[CH:13][C:12]1=2)=[N+:32]=[N-:33]

Participants

Conditions

Temperature: 90 °C

Procedure

Methanesulfonicacid2-(9-methyl-1,2,3,4,5,10c-hexahydro-3a,6-diaza-cyclopenta[c] fluoren-6-yl)-1-pyrazin-2-yl-ethyl ester (280 mg, 0.65 mmol) was dissolved in 3 mL DMF, sodium azide (64 mg, 0.98 mmol) was added and heated at 90° C. for 1 h. The reaction mixture was monitored by LCMS. After consumption of starting material, the reaction mixture was cooled to RT, diluted with water (3 mL) and concentrated to obtain the crude product, which was purified by reverse phase chromatography to obtain 60 mg of 6-(2-azido-2-pyrazin-2-yl-ethyl)-9-methyl-2,3,4,5,6,10c-hexahydro-1H-3a,6-diaza-cyclopenta[c]fluorene. 1H NMR (CDCl3, freebase) δ (ppm): 8.65 (d, 1H), 8.60 (s, 1H), 8.50 (s, 1H), 7.8 (d, 1H), 7.22 (d, 1H), 7.09 (t, 1H), 5.1 (m, 1H), 4.8 (m, 1H), 4.6 (dd, 1H), 4.3 (m, 1H), 3.45 (m, 3H), 2.97 (m, 2H), 2.84 (m, 2H), 2.6 (m, 1H), 2.45 (d, 3H), 2.2 (m, 1H), 1.9 m (1′H). Separation by chiral HPLC provided enantiomers II-261a-b.

Workup

customAfter consumption of starting material
temperaturethe reaction mixture was cooled to RT
additiondiluted with water (3 mL)
concentrationconcentrated
customto obtain the crude product, which
customwas purified by reverse phase chromatography

Sources & evidence

ORD record: ord-53b7b6a6594b4a18976ebdfad5add772
Source dataset: uspto-grants-2014_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08815843B2

Reaction notes

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