Iodine → 2-Iodo-1-propyl-8-[1-(3-trifluoromethyl-benzyl)-1H-pyrazol-4-yl]-1,7-dihydro-purin-6-one

HRID 536015Notes

Reaction equation

N[C:2]1[N:3]([CH2:28][CH2:29][CH3:30])[C:4](=[O:27])[C:5]2[NH:6][C:7]([C:11]3[CH:12]=[N:13][N:14]([CH2:16][C:17]4[CH:22]=[CH:21][CH:20]=[C:19]([C:23]([F:26])([F:25])[F:24])[CH:18]=4)[CH:15]=3)=[N:8][C:9]=2[N:10]=1.N(OCCC(C)C)=O.[I:39]I.[O-]S([O-])(=S)=O.[Na+].[Na+]>C1COCC1>[I:39][C:2]1[N:3]([CH2:28][CH2:29][CH3:30])[C:4](=[O:27])[C:5]2[NH:6][C:7]([C:11]3[CH:12]=[N:13][N:14]([CH2:16][C:17]4[CH:22]=[CH:21][CH:20]=[C:19]([C:23]([F:25])([F:24])[F:26])[CH:18]=4)[CH:15]=3)=[N:8][C:9]=2[N:10]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of 2-Amino-1-propyl-8-[1-(3-trifluoromethyl-benzyl)-1H-pyrazol-4-yl]-1,7-dihydro-purin-6-one (prepared as given in Example 13) (0.169 g, 0.41 mmol), isoamyl nitrite (0.2 ml, 1.5 mmol), iodine (83 mg, 0.32 mmol) was taken in THF (5 ml) and stirred for 2 hours at 80° C. Reaction mixture was cooled and saturated solution of Na2S2O3 was added and extracted with ethyl acetate (3×5 ml). The organic layer was washed with brine (10 ml), dried over Na2SO4 and evaporated to obtain 2-Iodo-1-propyl-8-[1-(3-trifluoromethyl-benzyl)-1H-pyrazol-4-yl]-1,7-dihydro-purin-6-one (93 mg, 44%).

Workup

customReaction mixture
temperaturewas cooled
extractionextracted with ethyl acetate (3×5 ml)
washThe organic layer was washed with brine (10 ml)
dry with materialdried over Na2SO4
customevaporated

Sources & evidence

ORD record: ord-3470c73d6cf74b298d98203e6b0e282b
Source dataset: uspto-grants-2014_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08859566B2

Reaction notes

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