Sodium Hydroxide → HCID 9936477, compound

HRID 1007168Notes

Reaction equation

[O-:1][C:2]#[N:3].[Na+].[NH2:5][CH2:6][CH2:7][N:8]1[C:25](=[N:26][C:27]2[C:32]([CH:33]([CH3:35])[CH3:34])=[CH:31][CH:30]=[CH:29][C:28]=2[CH:36]([CH3:38])[CH3:37])[CH:24]=[C:11]2[C:12]3[C:17]([CH2:18][CH2:19][N:10]2[C:9]1=[O:39])=[CH:16][C:15]([O:20][CH3:21])=[C:14]([O:22][CH3:23])[CH:13]=3.[OH-].[Na+]>O.Cl>[C:2]([NH:5][CH2:6][CH2:7][N:8]1[C:25](=[N:26][C:27]2[C:28]([CH:36]([CH3:37])[CH3:38])=[CH:29][CH:30]=[CH:31][C:32]=2[CH:33]([CH3:35])[CH3:34])[CH:24]=[C:11]2[C:12]3[C:17]([CH2:18][CH2:19][N:10]2[C:9]1=[O:39])=[CH:16][C:15]([O:20][CH3:21])=[C:14]([O:22][CH3:23])[CH:13]=3)(=[O:1])[NH2:3]

Participants

Conditions

Temperature: 80 °C

Procedure

Sodium cyanate (0.87 g, 13.4 mmol) in water (20 ml) was added dropwise to a stirred solution of amine 3 (3.2 g, 6.7 mmol) in water (100 ml) and 1M HCl (13.4 ml) at 80° C. After stirring for 4 h at 80° C. the mixture was cooled and basified with 2M NaOH. The mixture was extracted with CH2Cl2 until no more product remained in the organic phase. The organic phases were combined, dried (MgSO4), filtered and concentrated in vacuo. The residue was purified by column chromatography [dichloromethane/methanol (97:3)] and the isolated product taken up in a mixture of dichloromethane and ether which on concentration afforded the title compound (0.6 g, 17%) as a pale yellow foam.

Workup

temperaturewas cooled
extractionThe mixture was extracted with CH2Cl2 until no more product
dry with materialdried (MgSO4)
filtrationfiltered
concentrationconcentrated in vacuo
customThe residue was purified by column chromatography [dichloromethane/methanol (97:3)]
additionthe isolated product taken up in a mixture of dichloromethane and ether which on concentration

Sources & evidence

ORD record: ord-f0866a9efabe40a0ab8e0cc2b265b081
Source dataset: uspto-grants-2004_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06794391B2

Reaction notes

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