Sodium Hydroxide → HCID 9936477, compound

HRID 2224196Notes

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-97caa40202a64f029fdb405fd8e62f22
Source dataset: uspto-grants-2008_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07378424B2

Reaction notes

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