Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Triethanolamine | HCID 7618 | — |
| Reactant | Ammonium Chloride | HCID 25517 | — |
| Reactant | tert-Butyl bromoacetate | HCID 79177 | — |
| Reactant | 1-[2-(2-Hydroxyethoxy)ethyl]piperazine | HCID 139436 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 86700943 | HCID 86700943 | 77.3% |
Reaction Steps
1-[2-(2-hydroxyethoxyl)ethyl]piperizine (12.36 g, 71.8 mmol) in tetrahydrofuran (THF) (60 mL) was added to bromoacetic acid tert-butyl ester (14.00 g, 71.8 mmol) in THF (10 mL). Triethanolamine (TEA) (22 mL, 143.5 mmol) was then added. DMF (30 mL) was added to the mixture to dissolve any solids. The reaction mixture was stirred at 50° C. for approximately 16 hours (overnight). NH4Cl (20 g, 370 mmol) and water (20 mL) were added to the mixture. The organic layer was extracted with ethylacetate (EtOAc). The organic layers were combined, concentrated, and purified by silica gel column chromatography (5-10% methanol (MeOH) in ethylacetate) to give of the target product as an oil (16 g, 77% yield). 1H NMR (400 MHz, CDCl3) (ppm) 3.70-3.55 (m, 7H), 3.09 (s, 2H), 2.52-2.80 (m, 10H), 1.44 (s, 9H).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09078926B2 |
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| Source dataset | uspto-grants-2015_07 |
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| ORD ID | ord-80dd0352aeb34d1a83b84b18d3551330 |
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| Source note | uspto-grants-2015_07 |
|---|