HuagongsheHuagongshe Chemistry Print Report · For research reference only
Chloroform → HCID 14478581, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Chloroform | HCID 6212 | — |
| Reactant | (R)-(-)-2-ethynyl-3,4-dihydro-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol | HCID 14478564 | — |
| Product | HCID 14478581 | HCID 14478581 | — |
Reaction Steps
By the same procedure as described in Example 28 (R)-2-ethynyl-3,4-dihydro-6-methoxy-,5,7,8-tetramethyl-H-1-benzopyran was prepared from (R)-(-)2-ethynyl-3,4-dihydro-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol. This product was produced as white prisms=93°-95° C. [α]D25 -57.14°, (C 0.28, CHCl3).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04914217 |
| Source dataset | uspto-grants-1990_04 |
| ORD ID | ord-382806c566d649ae95286f453641d31f |
| Source note | uspto-grants-1990_04 |