HuagongsheHuagongshe Chemistry Print Report · For research reference only
Diisopropylethylamine → 4-tert-Butoxycarbonyl-1-[(6-chloronaphthalen-2-yl)sulfonyl]-2-ethoxycarbonylpiperazine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | 6-Chloronaphthalene-2-sulfonyl chloride | HCID 10635129 | — |
| Reactant | 1-tert-Butyl 3-ethyl piperazine-1,3-dicarboxylate | HCID 11402671 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | 4-tert-Butoxycarbonyl-1-[(6-chloronaphthalen-2-yl)sulfonyl]-2-ethoxycarbonylpiperazine | HCID 69700224 | — |
Reaction Steps
In dichloromethane (18 ml), 1-tert-butoxycarbonyl-3-ethoxycarbonylpiperazine (517 mg) and 6-chloro-2-naphthylsulfonyl chloride (588 mg) were dissolved under ice cooling. To the resulting solution, diisopropylethylamine (0.59 ml) was added, followed by stirring at room temperature for 63 hours. The residue obtained by distilling off the solvent under reduced pressure was purified by chromatography on a silica gel column (hexane:ethyl acetate=3:1), whereby the title compound (688 mg, 71%) was obtained.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06525042B1 |
| Source dataset | uspto-grants-2003_02 |
| ORD ID | ord-18d2375fe8424e229100dee94b9ca76e |
| Source note | uspto-grants-2003_02 |