Bicyclo(2.2.1)heptan-2-one → 1-Methyl-5-[3-(Bicyclo[2.2.1]hept-2-ylamino)-4-Methoxyphenyl]-2-Imidazolidinone

HRID 2210486

Reaction equation

[CH3:1][N:2]1[CH:6]([C:7]2[CH:12]=[CH:11][C:10]([O:13][CH3:14])=[C:9]([NH2:15])[CH:8]=2)[CH2:5][NH:4][C:3]1=[O:16].[CH2:17]1[CH:21]2[CH2:22][C:23](=O)[CH:19]([CH2:20]2)[CH2:18]1.C([BH3-])#N.[Na+].[OH-].[Na+]>C(O)(=O)C.CCOCC.C(OCC)(=O)C>[CH3:1][N:2]1[CH:6]([C:7]2[CH:12]=[CH:11][C:10]([O:13][CH3:14])=[C:9]([NH:15][CH:18]3[CH2:17][CH:21]4[CH2:20][CH:19]3[CH2:23][CH2:22]4)[CH:8]=2)[CH2:5][NH:4][C:3]1=[O:16]

Participants

Conditions

Temperature: 5 °C

Procedure

The aniline of Example 51 (3.07 g, 17.95 mmol) is dissolved in 60 ml of glacial acetic acid and to this is added norcamphor (2.37 g, 21.54 mmol). The reaction is cooled to 5° C. and to it is added sodium cyanoborohydride (1.36 g, 21.54 mmol). The reaction is poured onto ice and is pH adjusted to 7 with 1 normal NaOH solution. The aqueous is extracted with methylene chloride dried over MgSO4, filtered and concentrated in vacuo to afford a brown oil which is flashed on SiO2 with ethyl acetate as the eluent. The appropriate fractions are combined and concentrated in vacuo to yield a white paste which is tritarted with ether to yield 0.57 g (10%) of the product as a white crystalline solid. MP=171°-174° C.

Workup

additionThe reaction is poured onto ice
extractionThe aqueous is extracted with methylene chloride
dry with materialdried over MgSO4
filtrationfiltered
concentrationconcentrated in vacuo
customto afford a brown oil which
concentrationconcentrated in vacuo
customto yield a white paste which

Sources & evidence

ORD record: ord-696f52dc4c5242149f4136b0d12c4761
Source dataset: uspto-grants-1995_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05459145

Linked notes

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