HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 518820Generated: October 31, 2026
Diisopropylethylamine → 2-{1-Methyl-4-[4-nitro-3-(propan-2-yloxy)phenyl]piperazin-2-yl}ethanol
https://huagongshe.com/reaction/518820
Participants
| Role | Name | HCID | Charge |
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| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | 2-(1-Methylpiperazin-2-yl)ethanol | HCID 6484682 | — |
| Reactant | 4-Fluoro-1-nitro-2-(propan-2-yloxy)benzene | HCID 10631832 | — |
| Solvent | Acetonitrile | HCID 6342 | — |
| Product | 2-{1-Methyl-4-[4-nitro-3-(propan-2-yloxy)phenyl]piperazin-2-yl}ethanol | HCID 86697986 | 70.8% |
Reaction Steps
974 mg of N,N-diisopropylethylamine and 724 mg of 2-(1-methylpiperazin-2-yl)ethanol are added to a suspension of 1 g of 4-fluoro-1-nitro-2-(propan-2-yloxy)benzene in 10 ml of acetonitrile. The reaction medium is microwave-heated at 110° C. for 6 hours and then concentrated to dryness under reduced pressure. Purification is carried out by flash chromatography on silica gel (40-63 microns), elution being carried out with a mixture of dichloromethane and methanol (100/0) to (90/10). 1.15 g of 2-{1-methyl-4-[4-nitro-3-(propan-2-yloxy)phenyl]piperazin-2-yl}ethanol are obtained in the form of a yellow oil.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09115140B2 |
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| Source dataset | uspto-grants-2015_08 |
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| ORD ID | ord-86a6b3c2caf745d2ae32a239921986fc |
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| Source note | uspto-grants-2015_08 |
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