HuagongsheHuagongshe Chemistry Print Report · For research reference only
Triethylamine → 4-[-5-Chloro-3-methylbenzothiazolinylidene]-3-methyl-1-phenylpyrazolin-5-one
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | 1H-Pyrazol-5-ol, 3-methyl-1-phenyl- | HCID 70335 | — |
| Reactant | 5-Chloro-2-methylthio-3-methylbenzothiazolium tosylate | HCID 86745614 | — |
| Solvent | Methanol | HCID 887 | — |
| Product | 4-[-5-Chloro-3-methylbenzothiazolinylidene]-3-methyl-1-phenylpyrazolin-5-one | HCID 86745615 | — |
Reaction Steps
3-Methyl-1-phenylpyrazolin-5-one (1.51 g,)) was mixed with 3.5 g (0.0087 mol) 5-chloro-2-methylthio-3-methylbenzothiazolium tosylate in 25 ml methanol. Triethylamine (0.89 g,) was added. The mixture was stirred for 1.5 hours, then filtered and washed with methanol. After drying the yield was 2.75 g (89%), mp 206° C., λmax=379 (ε=26,000).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05102781 |
| Source dataset | uspto-grants-1992_04 |
| ORD ID | ord-490b1d21de0d44c0b2e80344d6a99cfb |
| Source note | uspto-grants-1992_04 |