HuagongsheHuagongshe Chemistry Print Report · For research reference only
Pyridinium chloride → (+)-trans-2-(2-Chloro-5-fluoro-phenyl)-5,7-dihydroxy-8-(2-hydroxymethyl-1-methyl-pyrrolidin-3-yl)-chromen-4-one
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Pyridinium chloride | HCID 10176127 | — |
| Reactant | (+)-trans-2-(2-Chloro-5-fluoro-phenyl)-8-(2-hydroxymethyl-1-methyl-pyrrolidin-3-yl)-5,7-dimethoxy-chromen-4-one | HCID 66933861 | — |
| Product | (+)-trans-2-(2-Chloro-5-fluoro-phenyl)-5,7-dihydroxy-8-(2-hydroxymethyl-1-methyl-pyrrolidin-3-yl)-chromen-4-one | HCID 66933937 | — |
Reaction Steps
Compound of example 22 (0.8 g, 1.78 mmol) was demethylated using pyridine hydrochloride (8.0 g, 69.0 mmol) as described in example 17 to obtain the title compound.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07884127B2 |
| Source dataset | uspto-grants-2011_02 |
| ORD ID | ord-c4bcae8e23974798a9d0b67fc7b898d8 |
| Source note | uspto-grants-2011_02 |