Diiodomethane → 4-iodo-N,N-dicyclopropyl-6-ethyl-1-methyl-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridine-7-carboxamide

HRID 220389Notes

Reaction equation

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

Participants

Conditions

Temperature: 60 °C

Procedure

To a stirred suspension of 4-amino-N,N-dicyclopropyl-6-ethyl-1-methyl-1,6-dihydroimidazo[4,5-d]pyrrolo[2,3-b]pyridine-7-carboxamide (34.4 mg, 0.102 mmol) in diiodomethane (102 μL) at 60° C. was slowly added isoamyl nitrite (27.4 μL, 0.203 mmol). The reaction mixture was stirred at 60° C. 5 h. After cooling to rt, the reaction mixture was diluted with dichloromethane. Saturated aqueous sodium bicarbonate was added and the aqueous layer was extracted with dichloromethane (3×). The combined organics were dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The crude residue was placed on the pump for 16 h to remove any additional diiodomethane. LCMS was deemed pure enough to be carried forward crude. The product was used immediately in the next reaction.

Workup

custom5 h
temperatureAfter cooling to rt
extractionthe aqueous layer was extracted with dichloromethane (3×)
dry with materialThe combined organics were dried over anhydrous sodium sulfate
filtrationfiltered
concentrationconcentrated in vacuo
customto remove any additional diiodomethane
customThe product was used immediately in the next reaction

Sources & evidence

ORD record: ord-f3373a298e4d42e49536bb1fe2956c42
Source dataset: uspto-grants-2012_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08202881B2

Reaction notes

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