HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Anhydride → HCID 10839053, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Anhydride | HCID 7918 | — |
| Reactant | (20R,25R)-spirost-5-en-3beta-yl acetate | HCID 225768 | — |
| Catalyst | Pyridinium chloride | HCID 10176127 | — |
| Product | HCID 10839053 | HCID 10839053 | 84% |
Reaction Steps
Another group of workers, Dauben et al have reported a process in which diosgenin acetate is heated in acetic anhydride containing pyridine hydrochloride as catalyst which afforded pseudodiosgenin diacetate in 84% yield. (Ref:Dauben WG and Fonken GJ; J Am Chem Soc, 76, 4618, 1954).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05808117 |
| Source dataset | uspto-grants-1998_09 |
| ORD ID | ord-1c43a812ce7a48b88b52392dd54b2fdd |
| Source note | uspto-grants-1998_09 |