HuagongsheHuagongshe Chemistry Print Report · For research reference only
Chloroform → 2,3-dihydro-7-methoxy-8-{3-[4-(2-pyridinyl)-1-piperazinyl]propoxy}cyclopenta[c][1]benzopyran-4(1H)-one
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Chloroform | HCID 6212 | — |
| Reactant | 1-(2-Pyridyl)piperazine | HCID 94459 | — |
| Reactant | Fumarate | HCID 5460307 | — |
| Reactant | 8-(3-chloropropoxy)-2,3-dihydro-7-methoxycyclopenta[c][1]benzopyran-4(1H)-one | HCID 19927690 | — |
| Solvent | Acetone | HCID 180 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 2,3-dihydro-7-methoxy-8-{3-[4-(2-pyridinyl)-1-piperazinyl]propoxy}cyclopenta[c][1]benzopyran-4(1H)-one | HCID 19927704 | 68% |
Reaction Steps
Method B (75 h at 45° C.); starting materials: 8-(3-chloropropoxy)-2,3-dihydro-7-methoxy-cyclopenta[c][1]benzopyran-4(1H)-one (example 83) and 1-(2-pyridinyl)piperazine; yield 68%; fusion point 152°-154° C. (from chloroform and ethanol). Fumarate: method E; yield 96%; fusion point 205°-207° C. (from acetone).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05428038 |
| Source dataset | uspto-grants-1995_06 |
| ORD ID | ord-facc33b8c3164249976e4ffe74c53a33 |
| Source note | uspto-grants-1995_06 |