Diiodomethane → HCID 57786133, compound

HRID 1628981Notes

Reaction equation

[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:15]4[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][C:16]=4[Cl:23])[CH2:12][CH2:13][CH2:14][N:7]3[C:6]=2[C:5]([CH:24]([O:27][CH:28]=[CH2:29])[CH2:25][CH3:26])=[CH:4][CH:3]=1.[CH2:30]([Zn]CC)C.CCCCCC.ICI.[Cl-].[NH4+]>ClCCl>[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:15]4[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][C:16]=4[Cl:23])[CH2:12][CH2:13][CH2:14][N:7]3[C:6]=2[C:5]([CH:24]([O:27][CH:28]2[CH2:30][CH2:29]2)[CH2:25][CH3:26])=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 0 °C

Procedure

To a solution of 9-chloro-1-(2-chloro-4-methoxyphenyl)-6-[1-(ethenyloxy)propyl]-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole (170 mg, 0.39 mmol) in dichloromethane (4.0 mL) was added a solution of diethyl zinc in hexane (1.0 M, 2.0 mL, 2.0 mmol) and diiodomethane (0.31 mL, 3.84 mmol) at 0° C. After stirring at 0° C. for 1.5 hr, aqueous ammonium chloride was added to the reaction mixture at 0° C. The mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, dried over anhydrous magnesium sulfate and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel eluting with a 10-50% ethyl acetate/n-hexane gradient mixture to give the title compound (87.7 mg, 0.196 mmol, 50%) as a pale yellow solid.

Workup

extractionThe mixture was extracted with ethyl acetate
washThe organic layer was washed with water and brine
dry with materialdried over anhydrous magnesium sulfate
concentrationconcentrated in vacuo
customThe residue was purified by flash column chromatography on silica gel eluting with a 10-50% ethyl acetate/n-hexane gradient mixture

Sources & evidence

ORD record: ord-c80b54c698474b6e9fc3f2bfaae436f0
Source dataset: uspto-grants-2014_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08785460B2

Reaction notes

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