2,4-Dimethoxybenzylamine → HCID 16045052, compound

HRID 507335Notes

Reaction equation

[O:1]1[CH2:18][C@H:2]1[CH2:3][O:4][C:5]1[C:17]2[C:16]3[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=3)[NH:10][C:9]=2[CH:8]=[CH:7][CH:6]=1.[CH3:19][O:20][C:21]1[CH:28]=[C:27]([O:29][CH3:30])[CH:26]=[CH:25][C:22]=1[CH2:23][NH2:24]>CCOC(C)=O.CC(O)C>[CH:8]1[C:9]2[NH:10][C:11]3[C:16](=[CH:15][CH:14]=[CH:13][CH:12]=3)[C:17]=2[C:5]([O:4][CH2:3][C@@H:2]([OH:1])[CH2:18][NH:24][CH2:23][C:22]2[CH:25]=[CH:26][C:27]([O:29][CH3:30])=[CH:28][C:21]=2[O:20][CH3:19])=[CH:6][CH:7]=1

Participants

Conditions

Temperature: 85 °C

Procedure

To a solution of (S)-(+)-4-(2,3-Epoxypropoxy)-carbazole (7.56 g, 0.031 mole) in EtOAc/IPA (40/80 mL) was added 2,4-dimethoxybenzylamine (9.48 mL, 0.063 mole) and the reaction mixture was slowly heated to 80-90° C. and then refluxed for 5 hours. Subsequently the reaction mixture was cooled to room temperature and purified following the procedure similar to one described in step 11 for the synthesis of example 23, to afford the desired compound as colorless solid (6 g, 48%) with m.p: 152-154° C. 1H NMR (400 MHz, CDCl3): δ 2.17 (s 1H), 2.88-2.92 (m, 1H), 2.98-3.00 (m, 1H), 3.74-3.87 (m, 8H), 4.18-4.32 (m, 3H), 6.38-6.45 (m, 2H), 6.67 (d, 1H, J=8.0 Hz), 7.05 (d, 1H, J=8.0 Hz), 7.12 (d, 1H, J=8.0 Hz), 7.18-7.40 (m, 4H), 8.08 (s, 1H), 8.21 (d, 1H, J=8.0 Hz). MS m/z: 407.1 (M+1). Chiral purity: 99.96%

Workup

temperaturerefluxed for 5 hours
temperatureSubsequently the reaction mixture was cooled to room temperature
custompurified
customdescribed in step 11 for the synthesis of example 23

Sources & evidence

ORD record: ord-d800dee02b404e4d907ee9ae4cca8a8a
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07786142B2

Reaction notes

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