HuagongsheHuagongshe Chemistry Print Report · For research reference only
4,5-Dihydro-2-thiazolamine → 4-[(4,5-Dihydro-2-thiazolyl)amino]tetrahydro-3,5-bis[(4-methoxyphenyl)methylene]thiopyran-4-ol-1,1-dioxide
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 4,5-Dihydro-2-thiazolamine | HCID 15689 | — |
| Reactant | 4H-Thiopyran-4-one, tetrahydro-3,5-bis(p-methoxybenzylidene)-, 1,1-dioxide | HCID 286326 | — |
| Solvent | Methyl Ethyl Ketone | HCID 6569 | — |
| Product | 4-[(4,5-Dihydro-2-thiazolyl)amino]tetrahydro-3,5-bis[(4-methoxyphenyl)methylene]thiopyran-4-ol-1,1-dioxide | HCID 54076593 | 102.8% |
Reaction Steps
A stirred solution of tetrahydro-3,5-bis(4-methoxyphenylmethylene)-4H-thiopyran-4-one-1,1-dioxide (5.7 g, 0.014 mole) in 100 ml of MEK is treated with 2-amino-2-thiazoline (2.1 g, 0.020 mole). After heating at reflux for 1 hour the yellow mixture becomes colorless. After cooling for several hours, the product is filtered and washed with MEK and ether to give 7.0 g (97%) of colorless product, m.p. 194°-196°.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04128647 |
| Source dataset | uspto-grants-1978_12 |
| ORD ID | ord-be3ec249f36245b2bd715e66fad95bec |
| Source note | uspto-grants-1978_12 |