Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hexachloroethane | HCID 6214 | — |
| Reactant | N,N,N',N'-Tetramethylethylenediamine | HCID 8037 | — |
| Reactant | Cyclohexane | HCID 8078 | — |
| Reactant | 3-Thiophenecarboxamide,N-ethyl- | HCID 15452328 | — |
| Reactant | CID 53628100 | HCID 178418400 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 18630045 | HCID 18630045 | 57% |
Reaction Steps
A solution of 1.3M s-BuLi in cyclohexane (44 mL, 57.2 mmol) was added dropwise to a -78° C. cooled solution of N-ethyl-3-thiophenecarboxamide (4.04 g, 26 mmol) and TMEDA (6.65 g, 57.2 mmol) in THF (100 mL). After stirring for 30 min at -78° C., a solution of hexachloroethane (13.54 g, 57.2 mmol) in THF (20 mL) was added dropwise. The resulting reaction mixture was warmed to RT over 1 h, quenched with dilute aq citric acid, and extracted with EtOAc (3×). The combined organic extracts were dried (MgSO4), concentrated, and purified by HPLC with 3:7 EtOAc/hexanes to give 2.8 g of N-ethyl-2-chloro-3-thiophenecarboxamide as a yellow oil, a 57% yield.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US05811411 |
|---|
| Source dataset | uspto-grants-1998_09 |
|---|
| ORD ID | ord-43ad3cfeb71a42d79fce51f54098581e |
|---|
| Source note | uspto-grants-1998_09 |
|---|