Methyl iodide → HCID 67263618, compound

HRID 1041801Notes

Reaction equation

[C:1]([O:5][C:6](=[O:20])[CH2:7][NH:8][CH2:9][C:10]1[CH:15]=[CH:14][C:13]([N+:16]([O-:18])=[O:17])=[CH:12][C:11]=1[NH2:19])([CH3:4])([CH3:3])[CH3:2].I[CH3:22]>C1COCC1>[C:1]([O:5][C:6](=[O:20])[CH2:7][N:8]([CH2:9][C:10]1[CH:15]=[CH:14][C:13]([N+:16]([O-:18])=[O:17])=[CH:12][C:11]=1[NH2:19])[CH3:22])([CH3:4])([CH3:2])[CH3:3]

Participants

Conditions

Temperature: 40 °C

Procedure

A mixture of (2-amino-4-nitro-benzylamino)-acetic acid tert-butyl ester (0.33 g, 1.16 mmol), iodomethane (0.22 mL, 3.5 mmol) and 2-tert-butylimino-2-diethyl-amino-1,3-dimethyl-perhydro-1,2,3-diazaphosphorine on polystyrene (Fluka) (2.6 g, 5.8 mmol) in THF (15 mL) was heated at 40° C. for 6 hours. Filtration, filtrate solvent evaporation, and chromatography on preparative TLC with methylene chloride and methanol (40:1) gave 0.23 g of [(2-amino-4-nitro-benzyl)-methyl-amino]-acetic acid tert-butyl ester in 67% yield: 1H NMR (300 MHz, CDCl3) δ 7.54 (d, 1H), 7.52 (s, 1H), 7.18 (d, 1H), 5.43 (br, 2H), 4.73 (s, 2H), 4.25 (s, 2H), 2.35 (s, 3H), 1.37 (s, 9H); MS (m/e): 296.4 (M+1).

Workup

filtrationFiltration, filtrate solvent evaporation, and chromatography on preparative TLC with methylene chloride and methanol (40:1)

Sources & evidence

ORD record: ord-7cb49c4ed8934303b7dd4cfe88b0210f
Source dataset: uspto-grants-2013_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08552186B2

Reaction notes

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