Sodium hydride → HCID 178474147, compound

HRID 505426Notes

Reaction equation

[Cl-].[Br:2][C:3]1[CH:4]=[C:5]2[N:11]=[C:10]([CH2:12][P+](CCCC)(CCCC)CCCC)[NH:9][C:6]2=[N:7][CH:8]=1.[H-].[Na+].[CH:28]([C:30]1[N:35]=[C:34]([NH:36][C:37](=[O:39])[CH3:38])[CH:33]=[C:32]([CH3:40])[CH:31]=1)=O>O1CCCC1>[Br:2][C:3]1[CH:4]=[C:5]2[N:11]=[C:10](/[CH:12]=[CH:28]/[C:30]3[N:35]=[C:34]([NH:36][C:37](=[O:39])[CH3:38])[CH:33]=[C:32]([CH3:40])[CH:31]=3)[NH:9][C:6]2=[N:7][CH:8]=1

Participants

Conditions

Temperature: 90 °C

Procedure

5.0 g of 6-brom-3H-imidazo[4,5-b]pyridin-2-yl-methyl}-tributyl-phosphonium-chlorid (compound A5) are suspended in 50 ml of tetrahydrofuran and added to a suspension of sodium hydride (60% strength) in 50 ml tetrahydrofuran at room temperature. After vigorously stirring for 10 min, 1.43 g of N-(6-formyl-4-methyl-pyridin-2-yl)-acetamide (compound B11) is added in portions (10 min). Subsequently, the suspension is heated at 90° C. for 22 h. Thereafter, the mixture is filtered with suction and the remaining residue is rinsed with tetrahydrofuran. The pure title compound is obtained by evaporating the filtrate to dryness to afford 1.88 g of an amorphous solid. M.p.>350° C. ESI-MS: 372.1/374.1 (MH+; 99%/100%). TLC: Rf=0.50 (dichloromethane/methanol 10:1).

Workup

filtrationThereafter, the mixture is filtered with suction
washthe remaining residue is rinsed with tetrahydrofuran

Sources & evidence

ORD record: ord-20a96ebe777545c2a407f187a617a237
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07781453B2

Reaction notes

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