HuagongsheHuagongshe Chemistry Print Report · For research reference only
2-Bromopyridine → rac-3,4-Dihydro-2,5,7,8-tetramethyl-2-[(2-pyridinyl)ethynyl]-2H-1-benzopyran-6-ol
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 2-Bromopyridine | HCID 7973 | — |
| Reactant | rac-3,4-dihydro-2-ethynyl-2,5,7,8-tetramethyl-2H-1-benzopyran-6ol | HCID 14478563 | — |
| Product | rac-3,4-Dihydro-2,5,7,8-tetramethyl-2-[(2-pyridinyl)ethynyl]-2H-1-benzopyran-6-ol | HCID 15171815 | — |
Reaction Steps
This compound was prepared by reacting rac-3,4-dihydro2-ethynyl-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol with 2-bromopyridine as described in Example 14. The compound was isolated by chromatography as in Example 14 and was crystallized from ethyl acetate to give colorless crystals with m.p. 179°-181° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05132310 |
| Source dataset | uspto-grants-1992_07 |
| ORD ID | ord-6d39e9aeb834421f81449a8c7bb4b61d |
| Source note | uspto-grants-1992_07 |