HuagongsheHuagongshe Chemistry Print Report · For research reference only
Ammonia → 5-(2-hydroxypropoxy)-4-oxo-4H-1-benzopyran-2-carboxamide
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Ammonia | HCID 222 | — |
| Reactant | HCID 86732991 | HCID 86732991 | — |
| Product | 5-(2-hydroxypropoxy)-4-oxo-4H-1-benzopyran-2-carboxamide | HCID 21392592 | — |
Reaction Steps
By the method of Example 1 (c) 32 parts of 5-(2-hydroxypropoxy)-4-oxo-4H-1-benzopyran-2-carboxylic acid, ethyl ester were treated with ethanolic ammonia to give 23.3 parts of 5-(2-hydroxypropoxy)-4-oxo-4H-1-benzopyran-2-carboxamide, which crystallised from a mixture of ethanol and chloroform as a white solid, melting point 229°-231°C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03933845 |
| Source dataset | uspto-grants-1976_01 |
| ORD ID | ord-0c278491ef6d4b7d9e3c3622109d8424 |
| Source note | uspto-grants-1976_01 |