HuagongsheHuagongshe Chemistry Print Report · For research reference only
Thionyl Chloride → 2-Chromanecarbonyl chloride
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Thionyl Chloride | HCID 24386 | — |
| Reactant | 3,4-dihydro-2H-1-benzopyran-2-carboxylic acid | HCID 2723665 | — |
| Product | 2-Chromanecarbonyl chloride | HCID 2794583 | 98% |
Reaction Steps
89.0 g (0.5 mol) chroman-2-carboxylic acid and 71.4 g (0.6 mol) thionyl chloride were heated to 80° for 4-5 hours (end of gas evolution). Destillation (77°-80°/0.1 torr) yielded 96.0 g (98%) chroman-2-carboxylic acid chloride
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05137901 |
| Source dataset | uspto-grants-1992_08 |
| ORD ID | ord-1a0b3f41d97c400bb226b3b5ffe5ba99 |
| Source note | uspto-grants-1992_08 |