Tert-Butyl hypochlorite → 1-Chloro-3-(2-(2-(2-methoxyethoxy)ethoxy)ethyl)-2,2,5,5-tetramethylimidazolidin-4-one

HRID 1770726Notes

Reaction equation

[CH3:1][O:2][CH2:3][CH2:4][O:5][CH2:6][CH2:7][O:8][CH2:9][CH2:10][N:11]1[C:15](=[O:16])[C:14]([CH3:18])([CH3:17])[NH:13][C:12]1([CH3:20])[CH3:19].C(O[Cl:26])(C)(C)C>CO>[Cl:26][N:13]1[C:14]([CH3:18])([CH3:17])[C:15](=[O:16])[N:11]([CH2:10][CH2:9][O:8][CH2:7][CH2:6][O:5][CH2:4][CH2:3][O:2][CH3:1])[C:12]1([CH3:20])[CH3:19]

Participants

Conditions

Temperature: 0 °C

Procedure

To a 0° C. solution of 3-(2-(2-(2-methoxyethoxy)ethoxy)ethyl)-2,2,5,5-tetramethylimidazolidin-4-one (15.03 g, 52.1 mmol) in methanol (150 ml) was added tert-butylhypochlorite (8.50 g of 0.91 g/mL, 78.3 mmol), over a 10 minute period. The mixture was stirred for 1 hour at 0° C. The reaction mixture was checked for completion by high pressure liquid chromatography. The reaction mixture was concentrated in vacuo, and crude material was purified by silica gel flash chromatography (0 to 10% methanol in dichloromethane) to give 15.43 g (92%) of the title compound. 1H NMR (D2O, 400 MHz) δ 3.74-3.65 (m, 8H), 3.62-3.60 (m, 2H), 3.55 (t, J=6 Hz, 2H), 3.37 (s, 3H), 1.53 (s, 6H), 1.36 (s, 6H). 13C NMR (D2O, 100 MHz) δ 175.00, 83.68, 70.98, 69.59 (2 peaks), 69.39, 67.65, 66.02, 57.99, 40.16, 24.07, 22.52. LRMS (ESI/APCI) m/z 323 [M+H]+.

Workup

concentrationThe reaction mixture was concentrated in vacuo, and crude material
customwas purified by silica gel flash chromatography (0 to 10% methanol in dichloromethane)

Sources & evidence

ORD record: ord-3f0a1a5932794f40a8809a35423c6bcb
Source dataset: uspto-grants-2016_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09248117B2

Reaction notes

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