Triethylamine → N-(5-Chloro-2-methoxyphenyl)-N'-(2-oxo-2-phenylethyl)urea

HRID 650041

Reaction equation

[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:11][CH3:12])=[C:6]([N:8]=[C:9]=[O:10])[CH:7]=1.Cl.[NH2:14][CH2:15][C:16]([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)=[O:17].C(N(CC)CC)C>C1COCC1.C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:11][CH3:12])=[C:6]([NH:8][C:9]([NH:14][CH2:15][C:16](=[O:17])[C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)=[O:10])[CH:7]=1

Participants

Conditions

Temperature: 60 °C

Procedure

5-Chloro-2-methoxyphenylisocyanate (5.3 g, 29 mmol) was dissolved in THF (250 ml) under N2 and heated to 60° C. To this solution was added 2-aminoacetophenone-HCl (5 g, 29 mmol) followed by triethylamine (3.8 g, 30 mmol). After being stirred 1.5 h, the reaction mixture was diluted with ethyl acetate (2 vol) and washed with 1N HCl solution, saturated NaCO3 solution, and brine before being dried, MgSO4. Concentration gave a solid which was washed with diethylether 6 g (65%). mp 171-173° C.; IR(KBr, υ=cm−1) 3336, 1706, 1644, 1600, 1560, 1482, 1262, 1220, 1182, 1126; 1H NMR (300 MHz, CDCl3) δ 3.79 (3H, s), 4.84 (2H, d, J=4.3 Hz), 5.97 (1H, br.s), 6.71 (1H, d, J=8.7 Hz), 6.88 (1H, dd, J=8.7 Hz, 2.5 Hz), 7.97-8.00 (2H, m), 8.18 (1H, d, J=2.5 Hz); MS(DCl)m/z: 319(MH+); Anal. calcd. for C16H15ClN2O3: C, 60.29; H, 4.74; N, 8.79. Found: C, 60.17; H, 4.64; N, 8.70.

Workup

washwashed with 1N HCl solution, saturated NaCO3 solution, and brine
custombefore being dried
concentrationConcentration
customgave a solid which
washwas washed with diethylether 6 g (65%)

Sources & evidence

ORD record: ord-77c03cb0277b4a92bfb2164ced71049c
Source dataset: uspto-grants-2001_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06271249B1

Linked notes

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